Biology Chapter Enzymes MCQs With Answers

In order to get the Biology Chapter Enzymes MCQs With Answers, you are on the right site. Enzymes are proteins and they act as biological catalysts in organisms. The MCQs with Answers are available here for the students who are going to appear in the MDCAT test. This chapter comprises the introduction and then the characteristics of enzymes. Then there is the mechanism of the action of these enzymes. There are four steps in which enzymes act. It is described in detail in this chapter. There are some factors that affect the enzymes’ action. These factors involve temperature, pH, and concentration. There is an important concept of Enzyme Inhibitors. They block the activity of enzymes. So that’s the brief introduction of this chapter. Now, check out the important Enzymes MCQs with Answers below. Solve the quiz and check out the results.

Biology Chapter Enzymes MCQs With Answers

6143

ENZYMES

1 / 20

1. Sucrase (invertase) acts on:

A) Any disaccharide

B) Any organic Monomer

C) Sucrose and starch

D) Sucrose

2 / 20

2. A group of enzymes called hydrolases acts upon:

A) Proteins

B) All of these

C) Lipids

D) Carbohydrate

3 / 20

3. Starch is converted into maltose by:

A) Invertase

B) Hydrozenase

C) Maltase

D) Diastase

4 / 20

4. Which enzyme digests the major food source in Bean and Sunflower?

A) Lipase

B) Protease

C) Amylase

D) Diastase

5 / 20

5. Which one is hydrolase?

A) All of these

B) Polymerase

C) Enolase

D) Amylase

6 / 20

6. Enzymes that are slightly different in molecular structure but can perform similar activities are called:

A) Dehydrogenases

B) Apoenzyme

C) Isozyme

D) Kinases

7 / 20

7. Temp. is going from 15 to 41° C, rate of reaction is going:

A) Down

B) Up then down

C) Up

D) Down then up

8 / 20

8. A metabolic pathway is a:

A) Route taken by a single particular enzyme

B) Routes taken by all enzymes in a specific medium

C) Sequence of enzyme controlled reactions

D) Route taken by chemicals through a solution

9 / 20

9. Blocking of the active site of an enzyme temporarily is a type of:

A) Competitive inhibition

B) Irreversible inhibition

C) Non- competitive inhibition

D) Feedback Inhibition

10 / 20

10. Enzyme study is:

A) impossible

B) it is possible to study enzymes both invivo and invitro

C) invitro possible

D) in vivo possible

11 / 20

11. Co-enzyme is often formed from:

A) Inorganic ion

B) Lipid

C) Protein

D) Vitamin

12 / 20

12. An enzyme at below 5° C is:

A) Destroyed

B) Un-activated

C) Denatured

D) Activated

13 / 20

13. In feedback inhibition, a metabolic pathway is switched off by

A) Lack of substrate

B) Accumulation of end product

C) Rise in temperature

D) Competitive inhibition

14 / 20

14. Energy must be added for a chemical reaction to start: This is energy of

A) Activation

B) Oxidation

C) Enthalpy

D) Entropy

15 / 20

15. Enzyme groups recognized by IUB:

A) 2

B) 6

C) 4

D) 8

16 / 20

16. A complete enzyme is:

A) Holoenzyme

B) Apoenzyme

C) Coenzyme

D) Cofactor only

17 / 20

17. Active enzymes present in:

A) Mycoplasma

B) Viruses

C) Prions

D) Viroids

18 / 20

18. Protein into peptones by:

A) Pepsin

B) Trypsin

C) Erypsin

D) both A and B

19 / 20

19. Active site of enzyme is produced by:

A) Charges

B) Fibrous structure

C) Globular structure

D) Both a and b

20 / 20

20. Co-enzyme is often a:

A) Inorganic ion

B) Vitamin

C) Protein

D) Lipid

Your score is

Biology Chapter Enzymes MCQs With Answers

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