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

6059

ENZYMES

1 / 20

1. Enzyme groups recognized by IUB:

A) 2

B) 6

C) 8

D) 4

2 / 20

2. A complete enzyme is:

A) Apoenzyme

B) Holoenzyme

C) Cofactor only

D) Coenzyme

3 / 20

3. A group of enzymes called hydrolases acts upon:

A) Carbohydrate

B) Lipids

C) All of these

D) Proteins

4 / 20

4. Co-enzyme is often formed from:

A) Protein

B) Vitamin

C) Lipid

D) Inorganic ion

5 / 20

5. Active enzymes present in:

A) Prions

B) Viroids

C) Viruses

D) Mycoplasma

6 / 20

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

A) Accumulation of end product

B) Competitive inhibition

C) Lack of substrate

D) Rise in temperature

7 / 20

7. A metabolic pathway is a:

A) Routes taken by all enzymes in a specific medium

B) Sequence of enzyme controlled reactions

C) Route taken by a single particular enzyme

D) Route taken by chemicals through a solution

8 / 20

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

A) Protease

B) Amylase

C) Lipase

D) Diastase

9 / 20

9. Sucrase (invertase) acts on:

A) Any organic Monomer

B) Sucrose

C) Sucrose and starch

D) Any disaccharide

10 / 20

10. Active site of enzyme is produced by:

A) Globular structure

B) Charges

C) Both a and b

D) Fibrous structure

11 / 20

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

A) Non- competitive inhibition

B) Irreversible inhibition

C) Feedback Inhibition

D) Competitive inhibition

12 / 20

12. Enzyme study is:

A) impossible

B) in vivo possible

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

D) invitro possible

13 / 20

13. Which one is hydrolase?

A) Amylase

B) All of these

C) Polymerase

D) Enolase

14 / 20

14. An enzyme at below 5° C is:

A) Denatured

B) Activated

C) Un-activated

D) Destroyed

15 / 20

15. Protein into peptones by:

A) Erypsin

B) Trypsin

C) both A and B

D) Pepsin

16 / 20

16. Starch is converted into maltose by:

A) Hydrozenase

B) Invertase

C) Diastase

D) Maltase

17 / 20

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

A) Up then down

B) Up

C) Down then up

D) Down

18 / 20

18. Co-enzyme is often a:

A) Vitamin

B) Lipid

C) Inorganic ion

D) Protein

19 / 20

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

A) Enthalpy

B) Oxidation

C) Activation

D) Entropy

20 / 20

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

A) Kinases

B) Dehydrogenases

C) Isozyme

D) Apoenzyme

Your score is

Biology Chapter Enzymes MCQs With Answers

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