AP Enzymes Review 2023

Front

What do enzymes speed up in chemical reactions?

Back

Enzymes speed up reaction rates by lowering the Activation Energy.

Front

What is a molecule that competes for the active site of an enzyme?

Back

A molecule that competes for the active site of an enzyme is called a Competitive Inhibitor.

Front

What is the mechanism of enzyme activity known as?

Back

The mechanism of enzyme activity is known as the Lock and Key model.

Front

What happens when nerve gasses bind to enzymes?

Back

Nerve gasses act as Non-competitive Inhibitors, changing the shape of the enzyme and preventing it from interacting with substrates.

Front

What is any substance acted upon by an enzyme called?

Back

Any substance acted upon by an enzyme is called a Substrate.

Front

What is the role of an enzyme in a biochemical reaction?

Back

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

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 enzyme at a different site, altering its function.

Front

What is an example of a cofactor in enzyme activity?

Back

An example of a cofactor is a metal ion like zinc or magnesium that assists in enzyme function.

Front

What is the significance of the active site of an enzyme?

Back

The active site is the region of the enzyme where substrate molecules bind and undergo a chemical reaction.

Front

What is feedback inhibition in metabolic pathways?

Back

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