AP Biology: Enzymes

Front

What does a negative Delta G indicate about a reaction?

Back

The reaction releases energy and is spontaneous.

Front

Which ion is mentioned as possibly facilitating the phosphorylation of glucose?

Back

Magnesium ion.

Front

What is the term used for the enzyme that helps phosphorylate a sugar molecule?

Back

Hexokinase.

Front

Molecules that bind to enzymes and enhance an enzyme's ability are called:

Back

CoFactors.

Front

What is the primary role of enzymes in biological reactions?

Back

To decrease the activation energy needed for the reaction.

Front

What is the definition of an enzyme?

Back

A protein that acts as a catalyst to speed up chemical reactions in biological systems.

Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the effect of temperature on enzyme activity?

Back

Enzyme activity typically increases with temperature up to a certain point, after which it may denature.

Front

What is the role of a substrate in enzyme reactions?

Back

The substrate is the reactant that an enzyme acts upon.

Front

What is competitive inhibition in enzyme activity?

Back

A process where a molecule similar to the substrate competes for binding to the active site of the enzyme.