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

6300

ENZYMES

1 / 20

1. A group of enzymes called hydrolases acts upon:

A) Proteins

B) Carbohydrate

C) Lipids

D) All of these

2 / 20

2. Active enzymes present in:

A) Viruses

B) Prions

C) Viroids

D) Mycoplasma

3 / 20

3. Starch is converted into maltose by:

A) Maltase

B) Invertase

C) Hydrozenase

D) Diastase

4 / 20

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

A) Competitive inhibition

B) Non- competitive inhibition

C) Irreversible inhibition

D) Feedback Inhibition

5 / 20

5. Active site of enzyme is produced by:

A) Charges

B) Fibrous structure

C) Globular structure

D) Both a and b

6 / 20

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

A) Protease

B) Lipase

C) Diastase

D) Amylase

7 / 20

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

A) Up then down

B) Down then up

C) Down

D) Up

8 / 20

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

A) Kinases

B) Apoenzyme

C) Isozyme

D) Dehydrogenases

9 / 20

9. Co-enzyme is often formed from:

A) Protein

B) Lipid

C) Vitamin

D) Inorganic ion

10 / 20

10. Enzyme groups recognized by IUB:

A) 2

B) 8

C) 6

D) 4

11 / 20

11. A metabolic pathway is a:

A) Sequence of enzyme controlled reactions

B) Route taken by chemicals through a solution

C) Routes taken by all enzymes in a specific medium

D) Route taken by a single particular enzyme

12 / 20

12. Co-enzyme is often a:

A) Lipid

B) Protein

C) Inorganic ion

D) Vitamin

13 / 20

13. Protein into peptones by:

A) both A and B

B) Trypsin

C) Pepsin

D) Erypsin

14 / 20

14. Sucrase (invertase) acts on:

A) Sucrose

B) Any disaccharide

C) Sucrose and starch

D) Any organic Monomer

15 / 20

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

A) Entropy

B) Enthalpy

C) Activation

D) Oxidation

16 / 20

16. 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

17 / 20

17. A complete enzyme is:

A) Coenzyme

B) Cofactor only

C) Apoenzyme

D) Holoenzyme

18 / 20

18. Which one is hydrolase?

A) Polymerase

B) All of these

C) Amylase

D) Enolase

19 / 20

19. An enzyme at below 5° C is:

A) Un-activated

B) Denatured

C) Activated

D) Destroyed

20 / 20

20. Enzyme study is:

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

B) impossible

C) invitro possible

D) in vivo possible

Your score is

Biology Chapter Enzymes MCQs With Answers

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