Enzyme Principles

Practice Questions

GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Enzyme Principles

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1

The third step of glycolysis converts fructose-6-phosphate to fructose-1,6-bisphosphate. What type of enzyme mediates this?

2

The third step of glycolysis converts fructose-6-phosphate to fructose-1,6-bisphosphate. What type of enzyme mediates this?

3

In a Lineweaver-Burk plot, what quantity determines the y-intercept?

4

In a Lineweaver-Burk plot, what quantity determines the y-intercept?

5

Which of the following best describes when an inhibitor binds an enzyme at a separate site from the active site, but only when the enzyme and substrate are already bound in complex?

6

Which of the following best describes when an inhibitor binds an enzyme at a separate site from the active site, but only when the enzyme and substrate are already bound in complex?

7

Which of the following types of enzymes is responsible for joining molecules by forming new chemical bonds?

8

Which of the following types of enzymes is responsible for joining molecules by forming new chemical bonds?

9

A researcher is studying the rate of an enzyme-catalyzed reaction by placing increasing amounts of substrate into a solution containing the enzyme. After a certain concentration, the rate of the reaction plateaus and does not go any higher. What has happened?

10

A researcher is studying the rate of an enzyme-catalyzed reaction by placing increasing amounts of substrate into a solution containing the enzyme. After a certain concentration, the rate of the reaction plateaus and does not go any higher. What has happened?

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