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

6068

ENZYMES

1 / 20

1. A complete enzyme is:

A) Coenzyme

B) Apoenzyme

C) Holoenzyme

D) Cofactor only

2 / 20

2. Enzyme study is:

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

B) in vivo possible

C) invitro possible

D) impossible

3 / 20

3. Active site of enzyme is produced by:

A) Globular structure

B) Fibrous structure

C) Charges

D) Both a and b

4 / 20

4. Active enzymes present in:

A) Viruses

B) Prions

C) Mycoplasma

D) Viroids

5 / 20

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

A) Competitive inhibition

B) Feedback Inhibition

C) Non- competitive inhibition

D) Irreversible inhibition

6 / 20

6. Which one is hydrolase?

A) All of these

B) Amylase

C) Enolase

D) Polymerase

7 / 20

7. Co-enzyme is often formed from:

A) Vitamin

B) Inorganic ion

C) Protein

D) Lipid

8 / 20

8. Co-enzyme is often a:

A) Protein

B) Inorganic ion

C) Lipid

D) Vitamin

9 / 20

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

A) Rise in temperature

B) Accumulation of end product

C) Competitive inhibition

D) Lack of substrate

10 / 20

10. A metabolic pathway is a:

A) Sequence of enzyme controlled reactions

B) Routes taken by all enzymes in a specific medium

C) Route taken by chemicals through a solution

D) Route taken by a single particular enzyme

11 / 20

11. Enzyme groups recognized by IUB:

A) 6

B) 2

C) 8

D) 4

12 / 20

12. An enzyme at below 5° C is:

A) Destroyed

B) Un-activated

C) Denatured

D) Activated

13 / 20

13. Sucrase (invertase) acts on:

A) Any organic Monomer

B) Any disaccharide

C) Sucrose and starch

D) Sucrose

14 / 20

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

A) Dehydrogenases

B) Apoenzyme

C) Kinases

D) Isozyme

15 / 20

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

A) Entropy

B) Activation

C) Enthalpy

D) Oxidation

16 / 20

16. Starch is converted into maltose by:

A) Hydrozenase

B) Diastase

C) Maltase

D) Invertase

17 / 20

17. Protein into peptones by:

A) Erypsin

B) Trypsin

C) both A and B

D) Pepsin

18 / 20

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

A) Down

B) Up

C) Down then up

D) Up then down

19 / 20

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

A) Amylase

B) Protease

C) Diastase

D) Lipase

20 / 20

20. A group of enzymes called hydrolases acts upon:

A) Lipids

B) Proteins

C) All of these

D) Carbohydrate

Your score is

Biology Chapter Enzymes MCQs With Answers

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