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

6301

ENZYMES

1 / 20

1. A metabolic pathway is a:

A) Route taken by a single particular enzyme

B) Route taken by chemicals through a solution

C) Routes taken by all enzymes in a specific medium

D) Sequence of enzyme controlled reactions

2 / 20

2. Active enzymes present in:

A) Mycoplasma

B) Prions

C) Viruses

D) Viroids

3 / 20

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

A) Dehydrogenases

B) Isozyme

C) Kinases

D) Apoenzyme

4 / 20

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

A) Up then down

B) Down then up

C) Up

D) Down

5 / 20

5. A complete enzyme is:

A) Apoenzyme

B) Cofactor only

C) Coenzyme

D) Holoenzyme

6 / 20

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

A) Lack of substrate

B) Competitive inhibition

C) Rise in temperature

D) Accumulation of end product

7 / 20

7. An enzyme at below 5° C is:

A) Activated

B) Denatured

C) Un-activated

D) Destroyed

8 / 20

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

A) Feedback Inhibition

B) Competitive inhibition

C) Irreversible inhibition

D) Non- competitive inhibition

9 / 20

9. A group of enzymes called hydrolases acts upon:

A) Lipids

B) Proteins

C) All of these

D) Carbohydrate

10 / 20

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

A) Oxidation

B) Entropy

C) Enthalpy

D) Activation

11 / 20

11. Co-enzyme is often a:

A) Vitamin

B) Lipid

C) Inorganic ion

D) Protein

12 / 20

12. Enzyme study is:

A) in vivo possible

B) invitro possible

C) impossible

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

13 / 20

13. Active site of enzyme is produced by:

A) Charges

B) Globular structure

C) Fibrous structure

D) Both a and b

14 / 20

14. Starch is converted into maltose by:

A) Invertase

B) Maltase

C) Hydrozenase

D) Diastase

15 / 20

15. Protein into peptones by:

A) both A and B

B) Pepsin

C) Erypsin

D) Trypsin

16 / 20

16. Sucrase (invertase) acts on:

A) Sucrose and starch

B) Any organic Monomer

C) Any disaccharide

D) Sucrose

17 / 20

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

A) Amylase

B) Protease

C) Diastase

D) Lipase

18 / 20

18. Which one is hydrolase?

A) Polymerase

B) Amylase

C) All of these

D) Enolase

19 / 20

19. Co-enzyme is often formed from:

A) Vitamin

B) Inorganic ion

C) Protein

D) Lipid

20 / 20

20. Enzyme groups recognized by IUB:

A) 2

B) 8

C) 4

D) 6

Your score is

Biology Chapter Enzymes MCQs With Answers

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