AP Biology - Unit 3 Review

Front

What is a competitive inhibitor?

Back

A competitive inhibitor is a substance that resembles the substrate of an enzyme and competes for binding at the active site, thereby reducing the rate of the reaction.

Front

What is the role of oxygen in cellular respiration?

Back

Oxygen serves as the final electron acceptor in the electron transport chain (ETC), allowing for the production of ATP through oxidative phosphorylation.

Front

How does an increase in CO2 affect photosynthesis?

Back

An increase in CO2 concentration typically enhances the rate of photosynthesis, as CO2 is a key reactant in the process.

Front

What is an allosteric site on an enzyme?

Back

An allosteric site is a location on an enzyme, other than the active site, where molecules can bind to regulate the enzyme's activity, either enhancing or inhibiting its function.

Front

Define catabolism.

Back

Catabolism is the metabolic process that breaks down larger molecules into smaller ones, releasing energy in the process.

Front

What is the function of succinate dehydrogenase?

Back

Succinate dehydrogenase catalyzes the conversion of succinate to fumarate in the citric acid cycle, playing a key role in cellular respiration.

Front

What is the difference between catabolism and anabolism?

Back

Catabolism involves breaking down molecules to release energy, while anabolism is the process of building larger molecules from smaller ones, requiring energy.

Front

What is the electron transport chain (ETC)?

Back

The electron transport chain is a series of protein complexes located in the inner mitochondrial membrane that transfer electrons from NADH and FADH2 to oxygen, driving ATP synthesis.

Front

What is photorespiration?

Back

Photorespiration is a process in plants where the enzyme RuBisCO fixes oxygen instead of carbon dioxide, leading to a decrease in photosynthetic efficiency.

Front

What is metabolism?

Back

Metabolism encompasses all chemical reactions in a living organism, including both catabolic and anabolic processes.