Unit 3 AP Biology Insta-Review (Cellular Energetics)

Front

Where does photolysis take place?

Back

Photosystem II

Front

True or False: Enzymes get consumed by reaction and must be re-added.

Back

False

Front

How does an enzyme speed up the chemical reaction?

Back

By decreasing the activation energy required.

Front

Why does the substrate binding activate the enzyme?

Back

It changes the shape of the enzyme.

Front

If the enzyme is denatured, what happens to the reaction rate?

Back

The reaction rate decreases.

Front

What is photolysis?

Back

The process of splitting water molecules during photosynthesis to release oxygen.

Front

Define activation energy.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the role of enzymes in biological reactions?

Back

To act as catalysts that speed up reactions without being consumed.

Front

What happens to an enzyme's activity at extreme temperatures?

Back

It can denature, losing its functional shape and activity.

Front

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

Back

Competitive inhibitors bind to the active site, while non-competitive inhibitors bind to another part of the enzyme.