ap bio notes
Flashcard 1:
Front: What property of water allows it to support life in organisms? Back: Water is involved in chemical reactions that maintain homeostasis and allows for the transport of materials (e.g., blood in animals and sap in plants) .
Flashcard 2:
Front: What is the polarity of water, and why is it important? Back: Water is a polar molecule with partial charges at its poles, allowing it to form hydrogen bonds with other polar or charged molecules .
Flashcard 3:
Front: Define cohesion and adhesion in water. Back:
Cohesion: Water molecules attract each other, creating surface tension.
Adhesion: Water molecules attract and bond with other polar or charged molecules .
Flashcard 4:
Front: Why does water resist temperature changes? Back: Water has high specific heat capacity due to hydrogen bonding, which allows organisms to maintain a stable internal temperature .
Flashcard 5:
Front: What is capillary action in plants? Back: Capillary action occurs when water adheres to tube surfaces in plant vascular tissue and moves upward due to cohesion and adhesion, helping transport water from roots to leaves .
Flashcard 6:
Front: What are the main elements of life? Back: Carbon, Hydrogen, Oxygen, Nitrogen (CHON) are the main elements, with trace elements critical for maintaining homeostasis (0_Unit 1 Chemistry of L…).
Flashcard 7:
Front: What is the function of carbon in living organisms? Back: Carbon is used to produce every biomolecule (carbohydrates, proteins, nucleic acids, lipids) and is recycled back into the environment by decomposers .
Flashcard 8:
Front: What role does nitrogen play in organisms? Back: Nitrogen is essential for making proteins and nucleic acids. It is fixed from the atmosphere by bacteria and recycled by decomposers .
Flashcard 9:
Front: Describe the significance of phosphorus in life. Back: Phosphorus is necessary for building nucleic acids and phospholipids, which are essential for cell membranes. Lack of phosphorus can lead to death in organisms .
Flashcard 10:
Front: What are the main functions of carbohydrates? Back: Carbohydrates serve as a short-term energy source, provide structural support (e.g., cellulose in plants), and are involved in energy storage .
By continuing in this pattern, with one flashcard per concept, you will be able to create at least 65 flashcards. The document contains numerous detailed points on topics such as macromolecules, proteins, nucleic acids, electronegativity, hydrogen bonding, and biochemical processes like dehydration synthesis and hydrolysis, all of which can be turned into flashcards.
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Here are more flashcards based on the slides:
Flashcard 11:
Front: What is the significance of electronegativity in biology? Back: Electronegativity measures how strongly atoms attract bonding electrons. It helps explain how elements like oxygen, nitrogen, and fluorine pull electrons, impacting molecular structure and behavior.
Flashcard 12:
Front: How does polarity affect molecules? Back: Polarity results in molecules having an overall neutral charge but partial positive and negative poles due to unequal sharing of electrons, crucial for interactions in biological systems.
Flashcard 13:
Front: What are hydrogen bonds, and why are they important? Back: Hydrogen bonds are weak attractions between hydrogen atoms bonded to O, N, or F and another electronegative atom, playing a key role in molecular structure, especially in water and DNA.
Flashcard 14:
Front: How are atoms bonded in covalent vs. ionic bonds? Back: Covalent bonds involve sharing of electrons between atoms, storing energy, while ionic bonds result from the transfer of electrons from one atom to another, which dissociates easily in water.
Flashcard 15:
Front: What is dehydration synthesis? Back: Dehydration synthesis is an anabolic process where water is removed to form a bond between monomers, creating polymers, aided by enzymes.
Flashcard 16:
Front: What is hydrolysis? Back: Hydrolysis is a catabolic process that uses water to break down polymers into monomers, releasing energy and assisted by enzymes.
Flashcard 17:
Front: What are the four main types of biomolecules? Back: Carbohydrates, lipids, proteins, and nucleic acids are the four main types of biomolecules essential for life.
Flashcard 18:
Front: Why is carbon the basis of organic life forms? Back: Carbon has four valence electrons allowing it to form diverse structures with four covalent bonds, enabling the complexity needed for life.
Flashcard 19:
Front: What are monomers, dimers, and polymers? Back:
Monomer: The basic building block of biomolecules.
Dimer: Two monomers covalently bonded.
Polymer: Multiple monomers covalently bonded together.
Flashcard 20:
Front: What is anabolism? Back: Anabolism is the process of building monomers into polymers, requiring energy (endergonic) for energy storage and structure.
Flashcard 21:
Front: What is catabolism? Back: Catabolism is the process of breaking down polymers into monomers to generate ATP. It is exergonic, releasing energy.
Flashcard 22:
Front: What are the components of nucleotides in nucleic acids? Back: A nucleotide consists of a sugar, a phosphate group, and a nitrogenous base, linked by covalent bonds.
Flashcard 23:
Front: What are the differences between DNA and RNA? Back:
DNA: Double-stranded, stable, with the bases A, T, C, G, and a deoxyribose sugar.
RNA: Single-stranded, less stable, with the bases A, U, C, G, and a ribose sugar.
Flashcard 24:
Front: What is the primary structure of proteins? Back: The primary structure of proteins is the sequence of amino acids linked by peptide bonds, determining the protein’s overall folding and function.
Flashcard 25:
Front: How do secondary protein structures form? Back: Secondary structures form when hydrogen bonds between the amine and carboxyl groups of the peptide backbone create alpha helices and beta pleated sheets.
Flashcard 26:
Front: What is tertiary protein structure? Back: Tertiary structure is the final 3D folding of a protein, driven by R group interactions like hydrogen bonding, hydrophobic collapse, and disulfide bridges.
Flashcard 27:
Front: What is quaternary protein structure? Back: Quaternary structure occurs when multiple tertiary proteins join together to form a larger complex, often held by hydrogen bonding and side chain interactions.
Flashcard 28:
Front: What are disulfide bridges? Back: Disulfide bridges are strong covalent bonds between sulfur atoms in cysteine amino acids, contributing to protein stability, especially in extreme conditions.
Flashcard 29:
Front: How do enzymes function in cells? Back: Enzymes are specialized proteins that catalyze chemical reactions by lowering activation energy, helping maintain homeostasis in cells.
Flashcard 30:
Front: What are the main functions of lipids? Back: Lipids provide long-term energy storage, insulate and protect organs, and make up cell membranes (phospholipids).
Flashcard 31:
Front: How do saturated and unsaturated fats differ? Back:
Saturated fats: Linear, no double bonds, solid at room temperature, can build up in blood vessels.
Unsaturated fats: Have double bonds, prevent stacking, liquid at room temperature, less likely to clog arteries.
Flashcard 32:
Front: What is the function of carbohydrates in living organisms? Back: Carbohydrates provide a short-term energy source, help store energy, and contribute to structural components like cellulose in plants.
Flashcard 33:
Front: What are the differences between structural and energy-storing carbohydrates? Back:
Structural carbohydrates: Linear and stackable, providing stability (e.g., cellulose in plants).
Energy-storing carbohydrates: Branched structure, allowing for rapid energy release.
Flashcard 34:
Front: What is the role of phospholipids in cells? Back: Phospholipids form the main structure of cell membranes, creating a bilayer that regulates material passage in and out of cells.
Flashcard 35:
Front: What is the significance of specific heat capacity in water? Back: Water’s high specific heat capacity allows it to absorb large amounts of heat without a significant temperature increase, helping regulate temperatures in organisms.
These are a few more flashcards based on the document. With similar breakdowns of each concept, you can easily reach 65 flashcards. Would you like me to continue?
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Here are more flashcards to continue building the set:
Flashcard 36:
Front: What is the function of nucleic acids in cells? Back: Nucleic acids store and transmit genetic information. DNA stores genetic codes, while RNA helps with protein synthesis.
Flashcard 37:
Front: What are the main differences between eukaryotic and prokaryotic DNA? Back:
Eukaryotic DNA: Linear and stored in the nucleus.
Prokaryotic DNA: Circular and floats freely in the cytoplasm.
Flashcard 38:
Front: What is the significance of 5' and 3' ends in nucleic acids? Back: Nucleic acids have directionality, with a 5' phosphate group and a 3' hydroxyl group. This direction is important for processes like DNA replication and transcription.
Flashcard 39:
Front: How does the specific sequence of amino acids in a protein affect its function? Back: The sequence of amino acids (primary structure) determines how the protein folds into its secondary, tertiary, and quaternary structures, ultimately determining its function.
Flashcard 40:
Front: What happens if there is a mutation in the amino acid sequence of a protein? Back: A mutation can cause the protein to misfold, potentially leading to dysfunction or disease since its structure directly affects its function.
Flashcard 41:
Front: How do hydrogen bonds contribute to the structure of proteins? Back: Hydrogen bonds stabilize secondary protein structures (alpha helices and beta pleated sheets) and help in maintaining tertiary and quaternary structures.
Flashcard 42:
Front: What are the four levels of protein structure? Back:
Primary: Amino acid sequence.
Secondary: Alpha helices and beta sheets formed by hydrogen bonding.
Tertiary: 3D folding driven by side-chain interactions.
Quaternary: Multiple protein subunits coming together.
Flashcard 43:
Front: What is the role of R groups (side chains) in protein folding? Back: R groups interact through hydrogen bonds, hydrophobic interactions, ionic bonds, and disulfide bridges, guiding the protein to fold into its specific 3D shape.
Flashcard 44:
Front: What is the hydrophobic collapse in protein folding? Back: Hydrophobic amino acids fold inward away from water, driving the formation of the protein’s tertiary structure.
Flashcard 45:
Front: Why is water an excellent solvent? Back: Water's polarity allows it to dissolve ionic compounds and polar molecules by surrounding and separating their charged particles, making it essential for biochemical reactions.
Flashcard 46:
Front: What is capillary action, and how do plants use it? Back: Capillary action occurs when water adheres to polar surfaces and climbs upwards. Plants use this mechanism to transport water from roots to leaves through vascular tissues.
Flashcard 47:
Front: How does water's high heat capacity benefit living organisms? Back: Water’s high heat capacity helps organisms maintain stable internal temperatures, protecting them from rapid environmental temperature changes.
Flashcard 48:
Front: What is the role of oxygen in living organisms? Back: Oxygen is essential for cellular respiration, where it acts as the final electron acceptor in the electron transport chain, producing ATP energy.
Flashcard 49:
Front: What is the role of nitrogen in living organisms? Back: Nitrogen is a crucial element in amino acids and nucleic acids, which are essential for building proteins and DNA/RNA.
Flashcard 50:
Front: What happens when organisms lack sufficient phosphorus? Back: Without enough phosphorus, organisms cannot produce nucleic acids or phospholipids, leading to failure in cell membrane formation and DNA replication.
Flashcard 51:
Front: How do living organisms recycle carbon? Back: Carbon is fixed by plants during photosynthesis and used by all organisms to produce biomolecules. When organisms die, decomposers recycle the carbon back into the environment.
Flashcard 52:
Front: What is an ionic bond? Back: An ionic bond is formed when one atom transfers electrons to another atom, resulting in the formation of positively and negatively charged ions that are attracted to each other.
Flashcard 53:
Front: What is a covalent bond? Back: A covalent bond forms when two atoms share electrons, creating a stable connection and storing energy that is released when the bond is broken.
Flashcard 54:
Front: What is the role of trace elements in the body? Back: Trace elements, though present in small amounts, are critical for maintaining homeostasis and supporting vital biological functions, such as enzyme activity and hormone regulation.
Flashcard 55:
Front: What is the significance of disulfide bridges in protein structure? Back: Disulfide bridges form strong covalent bonds between sulfur atoms in cysteine residues, stabilizing the protein structure and making it more resistant to environmental changes.
Flashcard 56:
Front: How do enzymes lower the activation energy of biochemical reactions? Back: Enzymes lower activation energy by stabilizing the transition state of a reaction, allowing it to proceed faster without needing excessive energy.
Flashcard 57:
Front: What is reaction coupling in metabolism? Back: Reaction coupling is the process of linking an exergonic (energy-releasing) reaction with an endergonic (energy-consuming) reaction, allowing the cell to efficiently use free energy.
Flashcard 58:
Front: What is ATP, and why is it important? Back: ATP (adenosine triphosphate) is the primary energy currency of the cell, used to power various metabolic processes by releasing energy when its phosphate bonds are broken.
Flashcard 59:
Front: What is the difference between hydrophobic and hydrophilic amino acids? Back:
Hydrophobic amino acids: Avoid water, usually have long hydrocarbon chains.
Hydrophilic amino acids: Attracted to water, often contain oxygen or nitrogen in their side chains.
Flashcard 60:
Front: How do temperature and pH affect protein structure? Back: Extreme changes in temperature or pH can break hydrogen bonds and charge attractions, denaturing proteins and disrupting their function.
Flashcard 61:
Front: What are the components of a nucleotide? Back: A nucleotide consists of three parts: a sugar (ribose or deoxyribose), a phosphate group, and a nitrogenous base.
Flashcard 62:
Front: What are the four nitrogenous bases in DNA? Back: The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).
Flashcard 63:
Front: What is the role of ribosomal RNA (rRNA)? Back: Ribosomal RNA (rRNA) forms the core structure of ribosomes and facilitates protein synthesis by helping decode mRNA into amino acids.
Flashcard 64:
Front: What is a peptide bond? Back: A peptide bond is a covalent bond that forms between the amine group of one amino acid and the carboxyl group of another, linking them in a protein chain.
Flashcard 65:
Front: What is the role of chitin in organisms? Back: Chitin is a structural carbohydrate found in the exoskeletons of insects and crustaceans, providing strength and protection.