AP Bio Module 14: Enzymes

Front

What is the role of Vitamin C in enzymatic reactions?

Back

Vitamin C acts as a coenzyme, assisting enzymes in catalyzing reactions.

Front

Which molecule is known to have the highest potential energy in biological systems?

Back

ATP (Adenosine Triphosphate) has the highest potential energy.

Front

What are cofactors and provide examples?

Back

Cofactors are non-protein chemical compounds that are required for the biological activity of some enzymes. Examples include Zinc and Iron.

Front

What is a non-competitive inhibitor?

Back

A non-competitive inhibitor is a substance that binds to an enzyme at a site other than the active site, changing the enzyme's shape and preventing it from interacting with its substrate.

Front

Define exergonic reactions. What characterizes them?

Back

Exergonic reactions are chemical reactions that release energy, characterized by a negative change in free energy.

Front

What is the function of enzymes in biological systems?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed in the process.

Front

How do temperature and pH affect enzyme activity?

Back

Enzyme activity can be affected by temperature and pH; each enzyme has an optimal temperature and pH at which it functions best.

Front

What is the difference between competitive and non-competitive inhibition?

Back

Competitive inhibition occurs when an inhibitor competes with the substrate for the active site, while non-competitive inhibition occurs when an inhibitor binds to an allosteric site, altering the enzyme's shape.

Front

What is the significance of enzyme-substrate specificity?

Back

Enzyme-substrate specificity ensures that enzymes catalyze only specific reactions, which is crucial for maintaining metabolic pathways.

Front

What is an allosteric site?

Back

An allosteric site is a site on an enzyme where a molecule can bind, causing a change in the enzyme's shape and activity.