Vertebrates
Animals with a hard internal skeleton with a backbone
Autotrophs
Organisms that manufature food molecules from simple, inorganic sources
Fungi
unicellular, multicellular, or syncytial spore-producing organisms feeding on organic matter, including moulds, yeast, mushrooms, and toadstools
Spores
one celled reproductive unit that can give birth to a new individual without sexual fusion, characteristic of fungi
Protists
eukaryotic organisms that are unicellular and sometimes colonial or less often multicellular and that typically include the protozoans, most algae
Mammals
endothermic vertebrates, that have teeth in their mouth, fur, whiskers, and a pinna on their ear
Movement
an action by an organism or part of an organism causing a change of position or place
Respiration
The break down of nutrient molecules and release of energy through chemical reactions in cells
Sensitivity
ability to detect or sense stimuli in the environment
Nutrition
taking in of materials for energy, growth and development
Species
largest group of organisms in which two individuals are capable of reproducing fertile offspring, typically using sexual reproduction.
Osmosis
Movement of water through a partially permeable membrane
Enzyme
Biological Catalyst
hydrolysis
large molecules are broken down into smaller ones weith the addition of water
polysacchrides
are formed from many monosaccahrides, are insoluble and a good store of energy
waxy cuticle
a lipid layer, waterproof
epidermis
transparents, so sunlight can reach palisade cells
Limiting Factors
Requirements of photosynthesis that are insufficient and therefore, limits the rate of photosynthesis
Phloem
The vascular tissue in plants which conducts sugars and other metabolic products downwards from the leaves.
Xylem
The vascular tissue in plants which conducts water and dissolved nutrients upwards from the root and also helps to form the woody element in the stem.
Vascular Bundle
A strand of conducting vessels in the stem or leaves of a plant, typically with phloem on the outside and xylem on the inside.
Flaccid
Drooping or inelastic through lack of water.
Cytoplasm
The material or protoplasm within a living cell, excluding the nucleus.
Vacuole
A space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
Ribosomes
A minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins
Vesicles
A small fluid-filled bladder, sac, cyst, or vacuole within the body.
Nucleus
A dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.
Cell wall
A rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose.
Ingestion
The taking of substances into the body through the mouth
Mechanical Digestion
Break down of food into smaller pieces without changing the food chemically
Chemical Digestion
Break down of large and insoluable molecules into small and soluable molecules
Absorption
Movement of small molecules and ions through the membrane of the small intestine into the blood
Assimilation
Movement of digested molecules into the cells of the body, where they are used and become part of the cell
Egestion
Passing out of food that has not been digested or absorbed, as faeces through the anus
Amylase
Enzyme that breaks down starch into simplar sugars
Protease
Enzyme that breaks down protein into amino acids
Lipase
Enzyme that breaks down fat and fatty acid into glycerol
Alimentary canak
Where amylase, protease and lipase are secreted
oesophagus
a muscular tube that helps food move to the stomach my peristalis
gall bladder
stores bile before pouring it into the bile duct
anus
exit for feaces, controlled by two anal sphincters
pancreas
makes pancreatic juice which contains enzymes
duodenem
part of small intestine where most absorbtion occurs
pepsin
converts proteins to peptides
maltase
completes break down of maltose to glucose
assimilation
absorbed food becomes you
Semilunar valve
Valve in the heart
anabolic reaction
build up large molecules from smaller ones
enzyme
proteins that function as biological catalysts
catalase
converts hydrogen peroxide to oxygen and water
sucrose
sugar transported in phloem
metabolism
sum of the chemical reactions within a living organism
Chlorophyll
A green pigment containing magnesium, which are located in chloroplasts
asexual reproduction
A reproductive process that involves only one parent and produces offspring that are identical to the parent.
sexual reproduction
A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents
clone
An organism that is genetically identical to the organism from which it was produced
fusion
the process or result of joining two or more things together to form a single entity.
gamete
Sex cell
zygote
Fertilized egg
haploid
(genetics) an organism or cell having only one complete set of chromosomes
diploid
(genetics) an organism or cell having two sets of chromosomes or twice the haploid number
fertlilisation
fusion of gamete nuclei
Activator
Makes binding of an enzyme with a substrate more likely
Active Transport
Allow molecules to move across membranes even against concentration gradients by being carried by carrier protein
Diffusion
Net movement of molecules within gas or liquid down the concentration gradient through a partially permeable membrane
Inhibitor
Makes binding of an enzyme with a substrate more diffcult
Phagocytosis
Few very specialised cells can engulf a particle and move the particle inside its membrane
Turgid
When the solution the cell is has high water concentration, it will diffuse into the cell, pushing the cell walls and making it turgid
Insects
small arthropod animal that has six legs and generally one or two pairs of wings
Order
A taxonomic category below class
Pathogen
a bacterium, virus, or other microorganism that can cause disease.
Phylum
A taxonomic category below kingdom
primordial soup
a solution rich in organic compounds in the primitive oceans of the earth, from which life is thought to have originated.
Proteins
made up of nucleic acids
Reptiles
cold-blooded vertebrates such as lizards and snakes
spores
a minute, typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion, characteristic of lower plants, fungi, and protozoans.
Alimentary canal
Where amylase, protease and lipase are secreted
Canine
a pointed tooth between the incisors and premolars of a mammal, often greatly enlarged in carnivores.
Incisor
Narrow-edged tooth at the front of the mouth, adapted for cutting. In humans there are four incisors in each jaw.
Bolus
A ball of chewed food mixed with saliva
amino acid
building block of proteins
amylase
to break down
Liver
Bile Storage
protein
molecule used for growth and repair in cells and organisms, cell surface membranes, enzymes and antibodies
rectum
last part of the large intestine, stores faeces
Renal
A word to do with kidney
salivary glands
produce saliva
stomach
muscular bag that stores food for a short time and mixes food with acidic juices toform a creamy liquid called chyme
Aerobic Respiration
Chemical reaction in cells that use oxygen to break down nutrient molecules to release energy
Alveoli
Bundle of air sacs at the end of bronchioles for oxygen and carbon dioxide to diffuse into and out of blood respectively
Anaerobic Respiration
Chemcial reaction in cells that break down nutrient molecules to release energy without oxygen
bronchiole
minute branch with the bronchus divides into
diaphragm
contracts when inhaling, enlarges the thoracic cavity. relaxes when exhaling
external intercostal muscles
inhalation : causes an elevation of the ribs
internal intercostal muscles
exhalation : lower the ribs
Lactic acid
Built-up acid in the muslcles after prolonged exercise
Oxygen debt
The oxygen needed to recover from exercise to convert lactic acid back to glucose or use it for energy
Deamination
Removal of nitrogen from amino acids to make ammonia and then urea from the ammonia
Fibrin
The insoluble protein in blood plasma formed from fibrinogen to clot blood
Fibrinogen
The soluble protein in blood plasma