All (11569)
Flashcards (1384)
flashcards
BTEC Level 3 Applied Science – COMPLETE Biology Revision Pack This is your main revision guide based on all the B1, B2 and B3 notes you shared and everything we’ve been practising. It includes: * All the main topics you need to revise. * Definitions and key scientific terms. * Cell structures and their functions. * Specialised cells and immunity. * Tissues, lungs and circulation. * Muscles and the nervous system. * ECGs. * 6-mark practice questions. * Mnemonics with every letter explained. * Exam-ready answers. Important: Nobody can guarantee the exact questions that will come up. This covers the topics in your notes, including likely extended-answer areas. Use your official unit specification and teacher’s guidance alongside it. PART 1 – B1: CELL STRUCTURE 1. Levels of organisation Learn these definitions: Term Definition Cell Basic structural and functional unit of life. Tissue Group of similar specialised cells working together. Organ Different tissues working together to perform a function. Organ system Different organs working together. Organelle Specialised structure inside a cell. Mnemonic: Cats Take Over Sofas * Cats = Cells * Take = Tissues * Over = Organs * Sofas = Systems Order: Cell → Tissue → Organ → Organ system. 2. Differentiation Definition: Differentiation is when an unspecialised cell develops into a specialised cell to perform a particular function. Examples: * A stem cell can become a red blood cell. * A stem cell can become a neurone. * A stem cell can become a muscle cell. 3. Prokaryotic cells Prokaryotes are cells without a nucleus. Learn these structures: Structure Function Nucleoid Contains circular DNA. Plasmids Small extra rings of DNA. 70S ribosomes Protein synthesis. Capsule Protection and attachment. Cell wall Made of peptidoglycan; provides support. Cell membrane Controls substances entering and leaving. Cytoplasm Where chemical reactions occur. Mnemonic: Naughty Pigs Rarely Chase Wolves * N = Nucleoid * P = Plasmids * R = Ribosomes * C = Capsule * W = Wall Remember: Prokaryotes do not have a nucleus or membrane-bound organelles. 4. Eukaryotic cells Eukaryotic cells have: * A nucleus. * 80S ribosomes in the cytoplasm. * Membrane-bound organelles. Plant cells Structure Function Cellulose cell wall Support and protection. Chloroplasts Photosynthesis. Permanent vacuole Contains cell sap and helps maintain turgor. Tonoplast Membrane surrounding the vacuole. Amyloplasts Store starch. Plasmodesmata Connections between neighbouring plant cells. Pits Areas where the cell wall is thinner. Animal cells Animal cells can contain: * Nucleus. * Mitochondria. * Ribosomes. * Cell membrane. * Cytoplasm. * Centrioles. * Glycogen stores. Animal cells do not have cellulose cell walls or chloroplasts. 5. Organelles and their functions Organelle Function Cell membrane Controls movement of substances. Cytoplasm Site of many chemical reactions. Nucleus Contains DNA and controls cell activities. Nucleolus Produces ribosomal components. Ribosomes Protein synthesis. Rough ER Transports and processes proteins. Smooth ER Lipid and steroid synthesis. Golgi apparatus Modifies, sorts and packages proteins. Vesicles Transport substances. Lysosomes Contain digestive enzymes. Mitochondria Aerobic respiration and ATP production. Centrioles Help organise spindle fibres during cell division. Chloroplasts Photosynthesis. Identifying organelles in micrographs * Mitochondria: oval shape with folded inner membranes called cristae. * Nucleus: large structure with a double membrane and pores. * Rough ER: flattened membranes with ribosomes attached. * Chloroplast: contains stacks of membranes called grana. * Golgi: curved, flattened membrane sacs. * Bacteria: no nucleus; DNA lies free in the cytoplasm. 6. Light and electron microscopes Light microscope Electron microscope Uses light. Uses an electron beam. Lower resolution. Higher resolution. Lower magnification. Higher magnification. Can view living cells. Specimens must be dead. Can show natural colours. Original images are monochrome. Generally cheaper. Generally more expensive. Mnemonic: M R C L * M = Magnification * R = Resolution * C = Colour * L = Living specimens 7. Magnification calculations Learn these three formulas: M=\frac{I}{A}I=M\times AA=\frac{I}{M} Where: * M = Magnification * I = Image size * A = Actual size Conversions: * 1 mm = 1000 µm * 1 µm = 1000 nm Always make sure your measurements use the same units. Stage micrometer and eyepiece graticule A graticule is calibrated against a stage micrometer. Mnemonic: Lazy Chefs Dice Meat * L = Line up the scales. * C = Count the divisions. * D = Divide the known measurement by the number of divisions. * M = Measure the specimen. Recalibrate when changing magnification. PART 2 – GRAM STAINING AND ANTIBIOTICS 8. Gram-positive and Gram-negative bacteria Gram-positive Gram-negative Thick peptidoglycan wall. Thin peptidoglycan wall. No outer membrane. Has an outer membrane. Stains purple. Stains pink/red. Generally more susceptible to penicillin. Outer membrane provides additional protection. 9. Gram staining Mnemonic: Hot Cats In Autumn Spring * Hot = Heat-fix: Fix bacteria onto a microscope slide. * Cats = Crystal violet: Add purple dye. * In = Iodine: Helps retain the crystal violet. * Autumn = Alcohol: Removes the dye from Gram-negative bacteria. * Spring = Safranin: Counterstains Gram-negative bacteria pink. * Result: Gram-positive purple, Gram-negative pink/red. 10. Penicillin Penicillin prevents the formation of cross-links in bacterial peptidoglycan. This: * Weakens the bacterial cell wall. * Allows water to enter by osmosis. * Causes the bacterial cell to burst (lysis). Gram-positive bacteria are generally more susceptible because their peptidoglycan is more accessible. Gram-negative bacteria have an outer membrane that can prevent or reduce penicillin entry. PART 3 – B2: SPECIALISED CELLS 11. Palisade cells Adaptations: * Contain many chloroplasts for photosynthesis. * Tall, thin shape allows cells to be closely packed. * Found near the upper surface of leaves to receive light. * Large vacuole pushes chloroplasts towards the cell edge. * Thin cell wall helps carbon dioxide diffuse into the cell. 12. Sperm cells Mnemonic: A Happy Mouse Tails * A = Acrosome: Contains enzymes to digest the egg’s outer layers. * H = Haploid nucleus: Contains half the normal chromosome number. * M = Mitochondria: Produce ATP for movement. * T = Tail: Flagellum propels the sperm. * S = Streamlined: Helps movement through fluid. 13. Egg cells Adaptations: * Large cytoplasm containing nutrient reserves. * Haploid nucleus. * Zona pellucida surrounds the egg. * Cortical granules help prevent polyspermy after fertilisation. Polyspermy: When more than one sperm fertilises an egg. 14. Root hair cells Adaptations: * Long extension gives a large surface area. * Thin cell wall gives a short diffusion distance. * Cell sap helps water enter by osmosis. * Mitochondria supply ATP for active transport of mineral ions. 15. Red blood cells Adaptations: * Biconcave shape gives a large surface area. * No nucleus, leaving more room for haemoglobin. * Haemoglobin binds oxygen. * Flexible shape allows movement through narrow capillaries. * Thin centre gives a short diffusion distance. Oxygen + haemoglobin ⇌ oxyhaemoglobin. 16. White blood cells Two important types: Neutrophils * Have a lobed nucleus. * Engulf pathogens by phagocytosis. * Use lysosomes containing digestive enzymes. * Form part of the innate immune response. * Respond rapidly to infection. Lymphocytes * Have a large, round nucleus. * B lymphocytes can develop into plasma cells. * Plasma cells produce specific antibodies. * Some become memory cells. * T lymphocytes can destroy infected cells. 17. Neutrophils and lymphocytes: similarities and differences Similarities mnemonic: Both Need Protection * Both = Both are white blood cells. * Need = Both contain a nucleus. * Protection = Both protect against pathogens. Differences: Neutrophils Lymphocytes Phagocytosis. Specific immune response. Lobed nucleus. Large, round nucleus. Digest pathogens using lysosomes. B cells produce antibodies. Part of innate immunity. Part of adaptive immunity. Respond rapidly. Can form long-lasting memory cells. 18. Antibodies and immunity Learn: * An antigen is a molecule recognised by the immune system. * Antibodies have binding sites complementary to specific antigens. * Antibodies bind to antigens. * This can neutralise pathogens or help other immune cells destroy them. * B lymphocytes can form memory cells. * Memory cells help produce a faster secondary response. 19. Allergies Mnemonic: A M H * A = Allergen enters the body. * M = Mast cells become involved. * H = Histamine is released. Histamine causes: * Blood vessels to widen. * Capillaries to become more permeable. * Fluid to move into tissues. * Swelling, itching and other allergic symptoms. 20. Transplant rejection Learn this sequence: * Donor cells have antigens. * The recipient recognises these antigens as foreign. * T lymphocytes recognise the foreign cells. * T cells attack the transplanted tissue. * Tissue matching reduces the chance of rejection. * Immunosuppressants reduce immune activity. PART 4 – B3: TISSUES AND THE RESPIRATORY SYSTEM 21. Epithelial tissues Squamous epithelium * Thin, flat cells. * Usually one cell thick in diffusion surfaces. * Short diffusion distance. * Found in alveoli and capillary walls. Columnar epithelium * Tall cells. * Can contain goblet cells. * Ciliated columnar cells move mucus. * Microvilli in the gut increase surface area for absorption. Endothelium * Lines the inside of blood vessels. * Smooth surface reduces friction. * Thin capillary endothelium allows diffusion. 22. COPD COPD stands for chronic obstructive pulmonary disease. Two important conditions: Emphysema Mnemonic: Smoking Makes Every Alveolus Lose Elasticity * Smoking causes inflammation. * White blood cells release elastase. * Elastase destroys alveolar walls. * Alveoli merge into larger air spaces. * Surface area decreases. * Elastic recoil decreases, causing difficulty breathing out. Chronic bronchitis Mnemonic: Irritated Goblets Make Coughing Increase * I = Inflammation of the bronchi. * G = Goblet cells enlarge. * M = More mucus is produced. * C = Cilia become damaged. * I = Infections become more common. * B = Bronchi narrow, causing coughing and breathing difficulties. 23. Alveoli adaptations Mnemonic: Silly Tigers Carry Very Massive Eggs * S = Surface area: Millions of alveoli create a large surface area. * T = Thin walls: One cell thick, short diffusion distance. * C = Capillaries: Dense network maintains the concentration gradient. * V = Ventilation: Refreshes alveolar air. * M = Moisture: Gases dissolve in the lining. * E = Elasticity: Allows stretching and recoil. 24. Gas exchange Oxygen moves: Alveolar air → Alveolar epithelium → Basement membrane → Capillary endothelium → Plasma → Red blood cell → Haemoglobin. Carbon dioxide moves in the opposite direction. Fick’s law Diffusion is faster when: * Surface area is larger. * Diffusion distance is shorter. * Concentration gradient is steeper. 25. Breathing and inhalation Mnemonic: Dancing Rabbits Visit Pretty Amazing Places * D = Diaphragm contracts and flattens. * R = Ribs move upwards and outwards. * V = Thoracic volume increases. * P = Pressure inside lungs decreases. * A = Air moves into the lungs. * P = Pressure equalises as air enters. Exhalation * Diaphragm relaxes and becomes dome-shaped. * External intercostal muscles relax. * Ribs move downwards and inwards. * Thoracic volume decreases. * Pressure inside the lungs increases. * Air moves out. 26. Smoking effects Mnemonic: Cigarettes Make Every Lung Suffer * C = Cilia damaged. * M = More mucus produced. * E = Excess infections. * L = Loss of alveolar walls. * S = Surface area reduced. * S = Smoking reduces lung elasticity. Smoking also damages blood vessel endothelium and increases atherosclerosis risk. PART 5 – ATHEROSCLEROSIS AND CIRCULATION 27. Atherosclerosis High-priority 6-marker Mnemonic: Dirty Money’s Find Pipes Narrowing Today * Dirty = Damage: The endothelium lining the artery becomes damaged. * Money’s = Macrophages: Macrophages enter the artery wall and engulf LDL cholesterol. * Find = Foam cells: Macrophages become foam cells, forming fatty streaks. * Pipes = Plaque: Fatty material builds up and forms a plaque. * Narrowing = Narrowing: The plaque narrows the artery and reduces blood flow. * Today = Thrombus: A blood clot can form and block the artery, potentially causing a heart attack or stroke. Risk factors * Smoking. * High blood pressure. * High LDL cholesterol. * Diabetes. * Age. * Poor diet. PART 6 – MUSCLES 28. Skeletal muscle structure Learn these terms: Structure Function Sarcolemma Muscle fibre cell membrane. Sarcoplasm Muscle fibre cytoplasm. Myofibrils Contain actin and myosin. Sarcomere Contractile unit between Z lines. Actin Thin filament. Myosin Thick filament. Sarcoplasmic reticulum Stores and releases calcium ions. Mitochondria Produce ATP. Skeletal muscle fibres are: * Long and cylindrical. * Multinucleate. * Striated. * Packed with myofibrils. 29. Sarcomere changes Structure During contraction A band Stays the same length. I band Shortens. H zone Shortens. Z lines Move closer together. Sarcomere Shortens. Mnemonic: A stays Always the same; I and H get Hit. 30. Sliding filament theory High-priority 6-marker Mnemonic: Clever Tigers Make Powerful Animals Run * Clever = Calcium: Calcium is released from the sarcoplasmic reticulum. * Tigers = Troponin: Calcium binds to troponin, moving tropomyosin. * Make = Myosin: Myosin binds to actin, forming cross-bridges. * Powerful = Power stroke: Myosin pulls actin towards the centre of the sarcomere. * Animals = ATP: ATP binds to myosin, causing detachment. * Run = Reset: ATP is broken down, re-cocking the myosin head. Remember: Actin and myosin do not shorten; they slide past one another. 31. Slow-twitch and fast-twitch fibres Mnemonic: Slow Red Runners Have Endurance Slow-twitch Type I * Red. * Lots of myoglobin. * Many mitochondria. * Dense capillary supply. * Mainly aerobic respiration. * Resist fatigue. * Used for endurance activities such as marathons. Fast-twitch Type II * Paler. * Less myoglobin. * Fewer mitochondria. * Lower capillary density. * More reliance on anaerobic energy pathways. * Contract quickly and powerfully. * Fatigue more quickly. * Used for sprinting and weightlifting. Remember: Slow = Stamina. Fast = Force. PART 7 – NERVOUS SYSTEM 32. Motor neurone structure Mnemonic: Dogs Can Always Nip Toes * D = Dendrites receive signals. * C = Cell body contains nucleus. * A = Axon carries the impulse. * N = Nodes of Ranvier are gaps in myelin. * T = Terminals release neurotransmitters. Myelin sheath * Insulates the axon. * Increases conduction speed. * Schwann cells produce myelin in the peripheral nervous system. * Nodes of Ranvier allow saltatory conduction. 33. Resting potential Mnemonic: Three Naughty Cats Keep Purring Inside * Three = 3 sodium ions pumped out. * Naughty = 2 potassium ions pumped in. * Cats = Pump uses ATP. * Keep = Potassium ions leak out. * Purring = Negative proteins remain inside. * Inside = Inside becomes approximately −70 mV. 34. Action potential Mnemonic: Silly Dogs Run Happily Past Houses * S = Stimulus reaches threshold (−55 mV). * D = Depolarisation begins as sodium channels open. * R = Rising potential as sodium enters. * H = High positive potential, around +40 mV. * P = Potassium channels open and potassium leaves. * H = Hyperpolarisation before returning to resting potential. Important extra facts * Action potentials are all-or-nothing. * A stronger stimulus increases frequency, not the size of the action potential. * The refractory period prevents immediate re-firing. * It helps ensure impulses travel in one direction. 35. Myelinated and non-myelinated neurones Mnemonic: Myelin Jumps Fast * Myelinated neurones have a myelin sheath. * They have nodes of Ranvier. * Impulses jump from node to node. * This is called saltatory conduction. * Non-myelinated neurones conduct continuously. * Myelinated neurones are faster and generally use less energy for impulse transmission. 36. Synaptic transmission High-priority 6-marker Mnemonic: All Clever Vikings Drink Really Slowly * All = Action potential: Arrives at the presynaptic knob. * Clever = Calcium: Calcium channels open and calcium enters. * Vikings = Vesicles: Vesicles release neurotransmitter by exocytosis. * Drink = Diffusion: Neurotransmitter diffuses across the synaptic cleft. * Really = Receptors: Neurotransmitter binds to postsynaptic receptors. * Slowly = Sodium: Sodium channels open and sodium enters, causing depolarisation. Extra: * Neurotransmitter is removed by enzymes or reuptake. * Synapses are one-way because receptors are on the postsynaptic membrane. 37. Acetylcholine Mnemonic: Release, Bind, Sodium, Enzyme, Recycle * Release: Acetylcholine is released from vesicles. * Bind: It binds to postsynaptic receptors. * Sodium: Sodium channels open. * Depolarisation: The membrane becomes less negative. * Enzyme: Acetylcholinesterase breaks down acetylcholine. * Recycle: Choline is taken back into the presynaptic neurone. 38. Agonists and antagonists Mnemonic: Agonist Activates; Antagonist Blocks. * Agonist binds to a receptor and activates it. * It can mimic a natural neurotransmitter. * Antagonist binds without activating the receptor. * It blocks the natural neurotransmitter from binding. Examples: * Nicotine: agonist at certain acetylcholine receptors. * Curare: antagonist at acetylcholine receptors. Other examples to know: * L-dopa is converted into dopamine. * SSRIs block serotonin reuptake. * Botulinum toxin prevents acetylcholine release. * Organophosphates inhibit acetylcholinesterase. 39. Neurotransmitters Neurotransmitter Main role Acetylcholine Muscle contraction and signalling. Glutamate Main excitatory neurotransmitter in the brain. GABA Main inhibitory neurotransmitter in the brain. Dopamine Movement and reward. Serotonin Mood, sleep and appetite. Noradrenaline Alertness and attention. 40. Parkinson’s disease Mnemonic: Dying Dopamine Makes Movement Slow * Dopamine-producing neurones in the substantia nigra degenerate. * Less dopamine is released. * Movement control is disrupted. * Symptoms include tremors, rigidity and slow movement. * L-dopa can be converted into dopamine in the brain. * Dopamine agonists can also help manage symptoms. 41. Depression and SSRIs Mnemonic: Serotonin Reuptake is Controlled, Levels Last * Serotonin is involved in mood regulation. * Serotonin is released into the synaptic cleft. * Normally, some serotonin is taken back into the presynaptic neurone. * SSRIs block serotonin reuptake transporters. * Serotonin remains in the synaptic cleft longer. * It can continue binding to postsynaptic receptors. PART 8 – ECGs 42. ECG waves Mnemonic: Please Quit Rushing, Stay Tranquil * P wave: Atrial depolarisation. * QRS complex: Ventricular depolarisation. * T wave: Ventricular repolarisation. Remember: * Atrial depolarisation is followed by atrial contraction. * Ventricular depolarisation is followed by ventricular contraction. * Ventricular repolarisation is followed by ventricular relaxation. 43. Heart rate calculations \text{Heart rate}=\frac{60}{\text{R-R interval in seconds}} Example: If the R-R interval is 0.8 seconds: 60\div0.8=75\text{ bpm} Know: * Tachycardia: over 100 beats per minute. * Bradycardia: under 60 beats per minute. * Regular R-R intervals indicate a regular rhythm. PART 9 – ALL THE 6-MARK QUESTIONS TO PRACTISE These are the extended-answer questions I would use to test your knowledge. They are based on your notes, not guaranteed predictions. Your 30-question exam checklist Tick each question once you can answer it without notes. 0/30 All 1. B1 – CellsCompare prokaryotic and eukaryotic cells. (6 marks) 2. B1 – CellsCompare light and electron microscopes. (6 marks) 3. B1 – MicroscopyExplain how to calculate magnification and actual size. (6 marks) 4. B1 – Gram stainingDescribe how Gram staining is carried out and how it identifies bacteria. (6 marks) 5. B1 – AntibioticsExplain why penicillin is generally more effective against Gram-positive bacteria. (6 marks) 6. B2 – Specialised cellsExplain how a sperm cell is adapted for fertilisation. (6 marks) 7. B2 – Specialised cellsExplain how a red blood cell is adapted to transport oxygen. (6 marks) 8. B2 – ImmunityExplain how phagocytes destroy pathogens. (6 marks) 9. B2 – ImmunityExplain how lymphocytes defend the body against pathogens. (6 marks) 10. B2 – ImmunityCompare the similarities and differences between neutrophils and lymphocytes. (6 marks) 11. B2 – ImmunityExplain how allergies occur. (6 marks) 12. B2 – ImmunityExplain how organ transplants can be rejected. (6 marks) 13. B3 – TissuesExplain how atherosclerosis develops. (6 marks) 14. B3 – LungsExplain how emphysema affects gas exchange. (6 marks) 15. B3 – LungsExplain how chronic bronchitis develops. (6 marks) 16. B3 – LungsExplain how alveoli are adapted for gas exchange. (6 marks) 17. B3 – LungsExplain the mechanism of inhalation. (6 marks) 18. B3 – LungsExplain how smoking damages the respiratory system. (6 marks) 19. MusclesExplain the sliding filament mechanism of muscle contraction. (6 marks) 20. MusclesCompare slow-twitch and fast-twitch muscle fibres. (6 marks) 21. NervesExplain how resting potential is maintained. (6 marks) 22. NervesExplain how an action potential is generated. (6 marks) 23. NervesCompare myelinated and non-myelinated neurones. (6 marks) 24. NervesExplain how an impulse travels along a myelinated neurone. (6 marks) 25. NervesExplain how a synapse transmits a nerve impulse. (6 marks) 26. NervesExplain how acetylcholine works at a synapse. (6 marks) 27. NervesExplain the difference between agonists and antagonists. (6 marks) 28. NervesExplain how Parkinson’s disease affects the nervous system. (6 marks) 29. NervesExplain how SSRIs affect synaptic transmission. (6 marks) 30. ECGsExplain what the P wave, QRS complex and T wave represent. (6 marks) Reset checklist PART 10 – IMPORTANT DEFINITIONS TO MEMORISE Term Meaning Diffusion Net movement of particles from high to low concentration. Osmosis Net movement of water across a partially permeable membrane from higher to lower water potential. Active transport Movement against a concentration gradient using energy. Phagocytosis Engulfing and digesting pathogens. Antigen Molecule recognised by the immune system. Antibody Protein that binds to a specific antigen. Depolarisation Membrane potential becomes less negative. Repolarisation Membrane potential returns towards its resting value. Hyperpolarisation Membrane potential becomes more negative than resting potential. Synapse Junction between neurones where signals are transmitted. Neurotransmitter Chemical messenger released at a synapse. Exocytosis Release of substances when vesicles fuse with a cell membrane. Atheroma Fatty plaque in an artery wall. Thrombus Blood clot formed within a blood vessel. Sarcomere Contractile unit of a myofibril. Oxyhaemoglobin Haemoglobin bound to oxygen. COPD Chronic obstructive pulmonary disease. Differentiation Process by which cells become specialised. PART 11 – THE MOST IMPORTANT MNEMONICS TO KNOW Here is your quick podcast-style recap. Read these aloud every day. Topic Mnemonic Cell organisation Cats Take Over Sofas Prokaryotic structures Naughty Pigs Rarely Chase Wolves Graticule calibration Lazy Chefs Dice Meat Gram staining Hot Cats In Autumn Spring Sperm cell A Happy Mouse Tails Atherosclerosis Dirty Money’s Find Pipes Narrowing Today Neutrophil and lymphocyte similarities Both Need Protection Alveoli Silly Tigers Carry Very Massive Eggs Inhalation Dancing Rabbits Visit Pretty Amazing Places Chronic bronchitis Irritated Goblets Make Coughing Increase Emphysema Smoking Makes Every Alveolus Lose Elasticity Sliding filament Clever Tigers Make Powerful Animals Run Slow-twitch fibres Slow Red Runners Have Endurance Motor neurone Dogs Can Always Nip Toes Action potential Silly Dogs Run Happily Past Houses Resting potential Three Naughty Cats Keep Purring Inside Synapse All Clever Vikings Drink Really Slowly Parkinson’s Dying Dopamine Makes Movement Slow ECG Please Quit Rushing, Stay Tranquil PART 12 – HOW TO REVISE THIS FOR YOUR EXAM I would revise in this order: Your 7-day revision plan * Day 1 – Cells Cell structures, prokaryotes, eukaryotes, microscopes and magnification. * Day 2 – Specialised cells Sperm, egg, root hair, palisade and red blood cells. * Day 3 – Immunity Neutrophils, lymphocytes, antibodies, allergies and transplant rejection. * Day 4 – Lungs and circulation Alveoli, inhalation, COPD, smoking and atherosclerosis. * Day 5 – Muscles Sarcomeres, sliding filament theory and muscle fibre comparisons. * Day 6 – Nervous system Resting potential, action potentials, synapses, neurotransmitters and Parkinson’s. * Day 7 – Exam practice Attempt the 6-mark questions without notes, then check your answers. My final advice For every 6-marker, learn: * The mnemonic. * What every letter stands for. * The scientific explanation. * The correct order of events. You have already shown that you can remember the atherosclerosis sequence and explain it in your own words. That’s exactly how you should practise the rest. Don’t just memorise the mnemonics. Make sure you understand what each biological process actually means. That’s what will help you answer the question even if the examiner words it differently.
5
Updated 19h ago
flashcards
Persian Vocab
118
Updated 3d ago
flashcards
determined (+) рішучий, цілеспрямований obstinate (-) упертий, затятий stubborn (-) упертий, непоступливий pig-headed (-) твердолобий, упертий як віслюк thrifty (+) ощадливий, господарний economical (+) економний stingy (-) скупий, скнаристий mean (-) жадібний, дріб'язковий tight-fisted (-) притискуватий, затиснутий miserly (-) [formal] патологічно скупий, скнара self-assured (+) упевнений у собі confident (+) упевнений self-important (-) сповнений відчуття власної важливості arrogant (-) зарозумілий, пихатий full of yourself (-) [informal] самозакоханий, задирає носа unconventional (+) нешаблонний, нетрадиційний original (+) самобутній, оригінальний eccentric (-) дивакуватий, ексцентричний odd (-) дивний, чудернацький peculiar (-) дивний, зі специфічними дивацтвами weird (-) [informal] химерний, незрозумілий frank (+) відвертий, щирий direct (+) прямий open (+) відкритий blunt (-) прямолінійний до грубості, рубає з плеча abrupt (-) різкий, уривчастий brusque (-) безцеремонний, грубуватий curt (-) сухо-відрізний, непривітно лаконічний broad-minded (+) з широким світоглядом, толерантний unprincipled (-) безпринципний permissive (-) надто поблажливий, попустительський enquiring (+) [formal] допитливий (з пізнавальним інтересом) inquisitive (-) надміру допитливий, настирливий nosy (-) [informal] пхає носа в чужі справи generous (+) щедрий extravagant (-) марнотратний innocent (+) безневинний, простодушний naive (-) наївний, легковірний ambitious (+) амбітний, цілеспрямований pushy (-) [informal] настирливий, нахабний, безпардонний assertive (+) упевнений, здатний відстояти свою думку aggressive (-) агресивний bossy (-) [informal] любить командувати іншими
4
Updated 4d ago
flashcards
PRAXIS MUSIC 5113 STUDY GUIDE Music Content Knowledge PURPOSE This study guide reviews important concepts in music theory, music history, performance, aural skills, music education, notation, and technology. It is a study resource, not a guarantee of the exact questions that will appear on the exam. SECTION 1: MUSIC THEORY 1. THE MUSICAL ALPHABET The musical alphabet consists of seven letters: A, B, C, D, E, F, G After G, the letters begin again at A. A sharp raises a note by one semitone. A flat lowers a note by one semitone. A natural cancels a previous sharp or flat. A half step is the smallest interval in standard Western equal-tempered music. A whole step equals two half steps. Important natural half steps: E to F B to C Examples of whole steps: C to D F to G A to B 2. MAJOR SCALES The major scale follows this pattern: WHOLE, WHOLE, HALF, WHOLE, WHOLE, WHOLE, HALF C MAJOR: C, D, E, F, G, A, B, C Half steps occur between E and F and between B and C. G MAJOR: G, A, B, C, D, E, F-sharp, G D MAJOR: D, E, F-sharp, G, A, B, C-sharp, D F MAJOR: F, G, A, B-flat, C, D, E, F B-flat MAJOR: B-flat, C, D, E-flat, F, G, A, B-flat 3. KEY SIGNATURES Order of sharps: F, C, G, D, A, E, B Order of flats: B, E, A, D, G, C, F Common major keys: C major has zero sharps or flats. G major has one sharp, F-sharp. D major has two sharps, F-sharp and C-sharp. A major has three sharps, F-sharp, C-sharp, and G-sharp. E major has four sharps. B major has five sharps. F-sharp major has six sharps. C-sharp major has seven sharps. F major has one flat, B-flat. B-flat major has two flats, B-flat and E-flat. E-flat major has three flats. A-flat major has four flats. D-flat major has five flats. G-flat major has six flats. C-flat major has seven flats. Relative major and minor keys share the same key signature. Examples: C major and A minor have no sharps or flats. G major and E minor have one sharp. F major and D minor have one flat. 4. SCALE DEGREES Scale degree 1: Tonic Scale degree 2: Supertonic Scale degree 3: Mediant Scale degree 4: Subdominant Scale degree 5: Dominant Scale degree 6: Submediant Scale degree 7: Leading tone Scale degree 8: Tonic, one octave higher In C major: 1 = C 2 = D 3 = E 4 = F 5 = G 6 = A 7 = B 8 = C The tonic is the tonal center and often feels like home. The dominant is scale degree 5 and commonly resolves to the tonic. The leading tone is scale degree 7 and commonly resolves upward to the tonic. 5. INTERVALS An interval is the distance between two pitches. Perfect unison: C to C Minor second: C to D-flat Major second: C to D Minor third: C to E-flat Major third: C to E Perfect fourth: C to F Tritone: C to F-sharp Perfect fifth: C to G Minor sixth: C to A-flat Major sixth: C to A Minor seventh: C to B-flat Major seventh: C to B Perfect octave: C to the next C Intervals have a number and a quality. Interval numbers include second, third, fourth, fifth, sixth, seventh, and octave. Interval qualities include major, minor, perfect, augmented, and diminished. 6. TRIADS AND CHORDS A triad contains three notes, usually stacked in thirds. Major triad: Root, major third, perfect fifth. Example: C, E, G. Minor triad: Root, minor third, perfect fifth. Example: C, E-flat, G. Diminished triad: Root, minor third, diminished fifth. Example: C, E-flat, G-flat. Augmented triad: Root, major third, augmented fifth. Example: C, E, G-sharp. In a major key, the usual triad pattern is: I = major ii = minor iii = minor IV = major V = major vi = minor vii diminished = diminished Uppercase Roman numerals represent major chords in this pattern. Lowercase Roman numerals represent minor chords. The diminished symbol identifies a diminished chord. In C major, the I chord is C major and the V chord is G major. The V chord commonly resolves to the I chord. 7. RHYTHM AND NOTE VALUES Whole note = four quarter-note beats. Half note = two quarter-note beats. Quarter note = one beat. Eighth note = half a beat. Sixteenth note = one-quarter of a beat. These values assume a simple meter in which the quarter note receives one beat. A dot adds half the original note value. A dotted half note equals three quarter-note beats. A rest indicates silence for a specific duration. The beat is the underlying pulse of music. Rhythm is the organization of note durations and rests. Tempo is the speed of the beat. Meter organizes beats into recurring groups. A measure is a unit of music separated by bar lines. Syncopation emphasizes unexpected beats or subdivisions. 8. TIME SIGNATURES The top number indicates how many beats or counting units are grouped in a measure. The bottom number identifies the note value used as the unit. 2/4 usually has two quarter-note beats per measure. 3/4 usually has three quarter-note beats per measure. 4/4 usually has four quarter-note beats per measure. 6/8 usually has two main beats, each divided into three eighth notes. Simple meter divides each main beat into two. Compound meter divides each main beat into three. Examples of simple meter include 2/4, 3/4, and 4/4. Examples of compound meter include 6/8, 9/8, and 12/8. 9. MUSICAL TEXTURE Monophonic texture consists of one melodic line. Several people singing the same melody in unison can still be monophonic. Homophonic texture consists of a melody supported by accompaniment or harmony. Polyphonic texture consists of two or more independent melodic lines. Heterophonic texture consists of simultaneous variations of the same melody. 10. MUSICAL FORM Binary form: AB. Ternary form: ABA. Rondo form: A recurring main section alternates with contrasting sections. An example is ABACA. Theme and variations: A theme is repeated with changes. Strophic form: The same music is repeated for different verses. Through-composed form: The music continues with new material rather than repeating the same large sections. Sonata form commonly includes exposition, development, and recapitulation. 11. DYNAMICS, TEMPO, AND ARTICULATION pp = pianissimo, very soft. p = piano, soft. mp = mezzo-piano, moderately soft. mf = mezzo-forte, moderately loud. f = forte, loud. ff = fortissimo, very loud. Crescendo means gradually louder. Diminuendo means gradually softer. Allegro means fast and lively. Adagio means slow. Andante means a walking pace. Moderato means moderate speed. Presto means very fast. Staccato means short and detached. Legato means smooth and connected. Accent means a note receives emphasis. Fermata means a note or rest is prolonged as directed. SECTION 2: MUSIC HISTORY AND LITERATURE 1. MEDIEVAL PERIOD, APPROXIMATELY 500 TO 1400 Important characteristics: Gregorian chant Monophonic sacred music Early musical notation Development of organum, which added voices to chant Important composer: Hildegard of Bingen 2. RENAISSANCE PERIOD, APPROXIMATELY 1400 TO 1600 Important characteristics: Polyphony Imitative counterpoint Balanced vocal writing Growth of secular vocal music Important genres: Motet Madrigal Mass Important composers: Josquin des Prez Giovanni Pierluigi da Palestrina Thomas Morley A madrigal is a secular vocal composition associated particularly with the Renaissance. 3. BAROQUE PERIOD, APPROXIMATELY 1600 TO 1750 Important characteristics: Ornamentation Contrast Basso continuo Counterpoint Development of opera Elaborate musical expression Important genres: Fugue Suite Concerto Opera Oratorio Important composers: Johann Sebastian Bach: Known for fugues, counterpoint, and sacred music. George Frideric Handel: Known for Messiah and other oratorios. Antonio Vivaldi: Known for The Four Seasons and concertos. Claudio Monteverdi: Important in the development of early opera. 4. CLASSICAL PERIOD, APPROXIMATELY 1750 TO 1820 Important characteristics: Balance Clarity Symmetry Clear phrase structure Formal organization Important genres: Symphony Sonata String quartet Concerto Opera Important composers: Wolfgang Amadeus Mozart: Known for operas, symphonies, and concertos. Joseph Haydn: Known for symphonies and string quartets. Ludwig van Beethoven: Bridged the Classical and Romantic periods. Sonata form commonly consists of exposition, development, and recapitulation. 5. ROMANTIC PERIOD, APPROXIMATELY 1820 TO 1900 Important characteristics: Emotional expression Expanded orchestras Richer harmony Nationalism Program music Virtuosic performance Important composers: Franz Schubert: Known for art songs and lieder. Frédéric Chopin: Known for piano compositions. Pyotr Ilyich Tchaikovsky: Known for ballets and orchestral music. Richard Wagner: Known for music dramas and operas. Hector Berlioz: Known for orchestration and programmatic music. Franz Liszt: Known for piano virtuosity and symphonic poems. 6. TWENTIETH-CENTURY AND CONTEMPORARY MUSIC Impressionism: Associated with Claude Debussy and Maurice Ravel. Emphasizes musical color, timbre, and distinctive harmonic language. Atonality: Music that does not rely on a conventional tonal center. Arnold Schoenberg is an important figure. Neoclassicism: Uses or adapts features associated with earlier musical periods. Igor Stravinsky is associated with this movement. Minimalism: Uses repetition and gradual musical change. Important composers include Philip Glass and Steve Reich. Other topics: Jazz Blues Electronic music Film music Experimental music Global musical traditions 7. IMPORTANT MUSICAL GENRES Symphony: A large-scale orchestral work, often consisting of several movements. Concerto: A work featuring a soloist or soloists in contrast with an orchestra. Sonata: An instrumental composition, often in multiple movements. Fugue: A contrapuntal composition based on a subject introduced in different voices. Opera: A dramatic work presented primarily through singing with instrumental accompaniment. Oratorio: A large vocal work, often sacred, generally performed without the staging typical of opera. Art song or Lied: A solo vocal composition, usually with piano accompaniment. Mass: A musical setting of texts from the Christian liturgy. Motet: A choral genre, often sacred, whose characteristics vary by period. Madrigal: A secular vocal genre especially associated with the Renaissance. SECTION 3: WORLD MUSIC AND CULTURAL CONTEXT West African drumming traditions: May feature layered rhythms, interlocking patterns, call and response, and community participation. Indian classical music: Raga refers to a melodic framework. Tala refers to a rhythmic cycle. Indonesian gamelan: Ensembles often include gongs, metallophones, and other instruments. Japanese shakuhachi: An end-blown bamboo flute. Blues: An African American musical tradition associated with expressive phrasing, blue notes, and characteristic harmonic patterns. Jazz: Often includes improvisation, interaction among musicians, and swing, depending on the style. Latin American music: Includes many regional traditions shaped by Indigenous, African, and European influences. Important principle: Study the sound, instruments, cultural context, and function of each musical tradition. Avoid assuming that every culture uses Western notation, harmony, or musical structures. SECTION 4: INSTRUMENT FAMILIES 1. WOODWINDS Examples: Flute Piccolo Oboe English horn Clarinet Bass clarinet Bassoon Contrabassoon Saxophone The flute produces sound when air is blown across an opening. The clarinet uses a single reed. The oboe uses a double reed. The bassoon uses a double reed. The saxophone uses a single reed, even though it is commonly made of brass. 2. BRASS Examples: Trumpet French horn Trombone Euphonium Tuba Brass instruments produce sound through the vibration of the player's lips against a mouthpiece. The trombone commonly uses a slide. The trumpet is generally the highest standard orchestral brass instrument. The tuba is generally the lowest standard orchestral brass instrument. 3. STRINGS Examples: Violin Viola Cello Double bass The violin is generally the highest standard orchestral string instrument. The viola is larger and lower in pitch than the violin. The cello is commonly played while seated. The double bass is the lowest standard orchestral string instrument. Strings can produce sound by bowing or plucking. 4. PERCUSSION Examples: Timpani Snare drum Bass drum Cymbals Triangle Tambourine Xylophone Marimba Vibraphone Definite-pitch percussion instruments include the xylophone, marimba, vibraphone, and timpani. Many drums and cymbals produce sounds without a single definite pitch. Percussion instruments are not all unpitched. SECTION 5: VOCAL MUSIC 1. VOICE TYPES Soprano: Highest common adult female voice category. Mezzo-soprano: Middle adult female voice category. Alto or contralto: Lower adult female voice category. Tenor: Highest common adult male voice category. Baritone: Middle adult male voice category. Bass: Lowest common adult male voice category. SATB stands for soprano, alto, tenor, and bass. Voice ranges can overlap. A student's comfortable singing range is more important than a single note boundary. 2. VOCAL HEALTH Encourage proper posture and relaxed breathing. Use age-appropriate warm-ups. Encourage hydration. Avoid forcing students to sing outside a comfortable range. Recognize that adolescent voices change at different rates. Adapt vocal parts to accommodate changing voices. Range refers to the pitches a singer can produce. Tessitura refers to the range in which a singer is most comfortable and can sing sustainably. SECTION 6: AURAL SKILLS AND PERFORMANCE 1. LISTENING VOCABULARY Pitch: How high or low a sound is. Timbre: The quality or color of a sound. Dynamics: The loudness and softness of music. Articulation: How notes begin, connect, and end. Intonation: The accuracy of pitch. Balance: The relative loudness of musical parts. Blend: How well sounds combine within an ensemble. Tempo: The speed of the beat. Texture: The relationship among musical lines. Form: The overall organization of a musical composition. 2. CONDUCTING Conducting patterns communicate meter and coordinate performers. Two-beat pattern: Two main beats per measure. Three-beat pattern: Three main beats per measure. Four-beat pattern: Four main beats per measure. The preparatory gesture establishes the tempo and helps cue the entrance. The ictus is the focal point of a beat gesture. A cutoff gesture indicates when performers should stop producing sound. Clear gestures, consistent tempo, and appropriate eye contact help ensembles perform together. 3. TUNING AND INTONATION Tuning establishes a reference pitch. Intonation describes the accuracy of performed pitches. A sharp pitch is too high. A flat pitch is too low. Musicians should listen to one another and adjust pitch, balance, and blend. Warm-ups prepare performers physically and musically. 4. TRANSPOSING INSTRUMENTS Some instruments sound at a different pitch from the written note. B-flat trumpet: Written C sounds as B-flat. B-flat clarinet: Written C sounds as B-flat. E-flat alto saxophone: Written C sounds as E-flat. F horn: Written C sounds as F. These are standard written-to-sounding relationships for the listed instruments. SECTION 7: MUSIC EDUCATION AND PEDAGOGY 1. IMPORTANT TEACHING APPROACHES Orff Schulwerk: Uses speech, movement, improvisation, and accessible percussion instruments. Kodály: Emphasizes singing, solfege, inner hearing, and sequential musicianship. Dalcroze Eurhythmics: Uses bodily movement to experience musical concepts, particularly rhythm. Suzuki: Emphasizes listening, repetition, early instrumental learning, and family involvement. Gordon Music Learning Theory: Emphasizes audiation, the ability to hear and comprehend music internally. 2. SOLFEGE Movable-do solfege connects syllables to scale degrees. Scale degree 1 = Do Scale degree 2 = Re Scale degree 3 = Mi Scale degree 4 = Fa Scale degree 5 = Sol Scale degree 6 = La Scale degree 7 = Ti Scale degree 8 = Do In movable do, Do represents the tonic of the key. In fixed do, syllables correspond to specific note names. Hearing is the physical process of perceiving sound. Audiation is the mental process of hearing and understanding music internally. 3. LESSON PLANNING A strong music lesson includes: A clear learning objective. Activities that directly support the objective. Opportunities for guided and independent practice. Assessment to determine whether students met the objective. Feedback and adjustments for future instruction. Example objective: Students will accurately clap and identify quarter notes, eighth notes, and quarter rests in a four-beat measure. An appropriate assessment would ask students to perform or identify the rhythms. 4. TYPES OF ASSESSMENT Diagnostic assessment: Identifies what students know before instruction. Formative assessment: Checks learning during instruction and helps the teacher adjust instruction. Summative assessment: Evaluates learning after a unit or at the end of instruction. Performance assessment: Requires students to demonstrate a skill, such as singing a melody. Rubric: Defines assessment criteria and performance levels. Example: If students struggle with a rhythmic pattern during rehearsal, the teacher can model the rhythm, provide guided practice, and reassess their performance. 5. CLASSROOM MANAGEMENT AND INCLUSION Give clear instructions. Model the expected behavior. Establish routines for distributing instruments and transitioning between activities. Choose age-appropriate repertoire. Use suitable vocal and instrumental ranges. Adapt instruction to accommodate different abilities and learning needs. Provide multiple ways for students to demonstrate understanding. Give specific and constructive feedback. Maintain a respectful environment where students can participate without humiliation. 6. COPYRIGHT AND PROFESSIONAL ETHICS Copyright generally protects original musical works and sound recordings, subject to applicable law. Purchasing sheet music does not automatically grant permission to copy or distribute it. Educational use is not automatically exempt from copyright restrictions. Fair use depends on the circumstances and relevant legal factors. Use appropriately licensed scores, recordings, and digital resources. Respect student privacy and follow school policies when recording or sharing performances. Credit sources and respect creators' rights. SECTION 8: MUSIC TECHNOLOGY AND ACOUSTICS MIDI: Represents musical performance data, including notes, timing, and velocity. MIDI is not itself a recorded audio waveform. Digital audio: Represents sound using digital samples. Microphone: Converts sound into an electrical signal. Amplification: Increases the level of an audio signal. Reverberation: The persistence of sound due to reflections in an environment. Acoustics: The study of how sound behaves in spaces and environments. Frequency: Measured in hertz and related to perceived pitch. Amplitude: Describes the magnitude of a sound wave or signal and is related to perceived loudness. Timbre: The quality that helps distinguish sounds produced by different instruments or voices. Important distinction: Frequency is not the same as loudness. Higher frequency generally corresponds to higher pitch, while greater amplitude generally corresponds to greater loudness. SECTION 9: MUSICAL NOTATION AND TERMS 1. STAFF AND CLEFS Treble clef lines, from bottom to top: E, G, B, D, F. Treble clef spaces, from bottom to top: F, A, C, E. Bass clef lines, from bottom to top: G, B, D, F, A. Bass clef spaces, from bottom to top: A, C, E, G. Ledger lines extend the staff to represent pitches above or below it. 2. ADDITIONAL TERMS Enharmonic notes: Notes that sound the same in equal temperament but have different spellings, such as C-sharp and D-flat. Anacrusis: An incomplete opening measure, also called a pickup. Ostinato: A repeated musical pattern. Rubato: Expressive flexibility in tempo. Cadenza: A soloistic passage, often virtuosic, traditionally associated with a concerto. A cappella: Singing without instrumental accompaniment. Counterpoint: The combination of independent melodic lines. Basso continuo: A Baroque accompaniment practice involving a bass line and harmonic realization.
4
Updated 4d ago
flashcards
Permanent Canines
76
Updated 5d ago
flashcards
Permanent Incisors
64
Updated 5d ago
flashcards
Permanent Canines
45
Updated 7d ago
Users (185)