AP Biology Metabolism

Front

What is an exergonic reaction?

Back

An exergonic reaction is a chemical reaction that releases energy, typically in the form of heat or light.

Front

What is an endergonic reaction?

Back

An endergonic reaction is a chemical reaction that requires an input of energy to proceed.

Front

What role does cyanide play in cellular respiration?

Back

Cyanide acts as an inhibitor, blocking the production of ATP in mitochondria.

Front

What is noncompetitive inhibition in enzyme activity?

Back

Noncompetitive inhibition occurs when a molecule binds to an enzyme at a site other than the active site, changing the enzyme's shape and preventing substrate binding.

Front

What is the difference between anabolic and catabolic reactions?

Back

Anabolic reactions build larger molecules from smaller ones and require energy, while catabolic reactions break down larger molecules into smaller ones and release energy.

Front

What does the first law of thermodynamics state?

Back

The first law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is feedback inhibition?

Back

Feedback inhibition is a regulatory mechanism in which the end product of a metabolic pathway inhibits an enzyme involved in its production.

Front

What is a coenzyme?

Back

A coenzyme is a non-protein organic molecule that assists enzymes in catalyzing reactions.

Front

What is a substrate in enzymatic reactions?

Back

A substrate is the reactant molecule upon which an enzyme acts.

Front

What is competitive inhibition?

Back

Competitive inhibition occurs when a molecule similar to the substrate competes for binding at the active site of an enzyme.