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

6080

ENZYMES

1 / 20

1. Sucrase (invertase) acts on:

A) Sucrose and starch

B) Any disaccharide

C) Sucrose

D) Any organic Monomer

2 / 20

2. Protein into peptones by:

A) Pepsin

B) Erypsin

C) both A and B

D) Trypsin

3 / 20

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

A) Dehydrogenases

B) Kinases

C) Isozyme

D) Apoenzyme

4 / 20

4. Active enzymes present in:

A) Prions

B) Mycoplasma

C) Viruses

D) Viroids

5 / 20

5. A metabolic pathway is a:

A) Route taken by a single particular enzyme

B) Routes taken by all enzymes in a specific medium

C) Route taken by chemicals through a solution

D) Sequence of enzyme controlled reactions

6 / 20

6. Active site of enzyme is produced by:

A) Globular structure

B) Both a and b

C) Charges

D) Fibrous structure

7 / 20

7. Starch is converted into maltose by:

A) Hydrozenase

B) Maltase

C) Diastase

D) Invertase

8 / 20

8. An enzyme at below 5° C is:

A) Denatured

B) Activated

C) Destroyed

D) Un-activated

9 / 20

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

A) Rise in temperature

B) Accumulation of end product

C) Lack of substrate

D) Competitive inhibition

10 / 20

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

A) Entropy

B) Activation

C) Enthalpy

D) Oxidation

11 / 20

11. A group of enzymes called hydrolases acts upon:

A) Proteins

B) Lipids

C) Carbohydrate

D) All of these

12 / 20

12. Which one is hydrolase?

A) Polymerase

B) Amylase

C) Enolase

D) All of these

13 / 20

13. A complete enzyme is:

A) Coenzyme

B) Cofactor only

C) Apoenzyme

D) Holoenzyme

14 / 20

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

A) Lipase

B) Protease

C) Amylase

D) Diastase

15 / 20

15. Enzyme study is:

A) invitro possible

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

C) impossible

D) in vivo possible

16 / 20

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

A) Irreversible inhibition

B) Non- competitive inhibition

C) Competitive inhibition

D) Feedback Inhibition

17 / 20

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

A) Down then up

B) Up

C) Up then down

D) Down

18 / 20

18. Co-enzyme is often formed from:

A) Inorganic ion

B) Lipid

C) Vitamin

D) Protein

19 / 20

19. Enzyme groups recognized by IUB:

A) 4

B) 6

C) 2

D) 8

20 / 20

20. Co-enzyme is often a:

A) Protein

B) Lipid

C) Vitamin

D) Inorganic ion

Your score is

Biology Chapter Enzymes MCQs With Answers

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