AP Biology Topic 3.3 Environment & Enzymes

Front

What determines the shape of an enzyme/protein?

Back

The amino acid sequence of the protein and the properties of the amino acids that make up the protein.

Front

Which statement is NOT true about enzymes?

Back

Enzymes can only be used once in a chemical reaction.

Front

What is the best way to speed up an enzymatic reaction?

Back

Add more enzyme.

Front

What can be concluded if changing the pH from 7 to 6 increases product formation?

Back

The enzyme was in a more active shape at pH 6.

Front

What is it called when a molecule binds to an enzyme at a site other than the active site, causing a shape change?

Back

Noncompetitive Inhibition.

Front

What is the optimal temperature range for most human enzymes?

Back

Approximately 37°C (98.6°F).

Front

What effect does extreme pH have on enzymes?

Back

It can denature enzymes, altering their shape and function.

Front

What is competitive inhibition?

Back

A molecule that resembles the substrate competes for the active site of the enzyme.

Front

Define allosteric regulation.

Back

The regulation of an enzyme's activity through the binding of a molecule at a site other than the active site.

Front

What is feedback inhibition?

Back

A process where the end product of a metabolic pathway inhibits an enzyme involved in its production.