3.2: Enzyme Catalysis

Question 1

How does an enzyme affect the rate of biological reactions?

Answer 1

It speeds up the reactions, so the rate increases

Question 2

What is an enzyme catalyzed reaction?

Answer 2

A substrate binds to an enzyme. In then can help lower the activation energy required to either synthesize or digest(break apart) molecules.

Question 3

How is the activation energy of an enzyme-catalyzed reaction and an uncatalyzed reaction different?

Answer 3

The activation energy is lowered with enzymes

Question 4

How is the change in free energy of an enzyme-catalyzed reaction and an uncatalyzed reaction different?

Answer 4

The change in free energy is the same.

Question 5

How is the reaction rate of an enzyme catalyzed reaction and an uncatalyzed reaction different?

Answer 5

The reaction rate is larger in the enzyme catalyzed reaction because a lower activation energy means that adding energy to the system is more likely to reach the threshold and cause a reaction

Question 6

What is the difference between a negative and positive control group?

Answer 6

A positive control group is a control with a known treatment that is different from what the experiment is testing for, while a negative control group is not exposed to any treatment.