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. Sucrase (invertase) acts on:

A) Any organic Monomer

B) Any disaccharide

C) Sucrose and starch

D) Sucrose

2 / 20

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

A) Activation

B) Entropy

C) Enthalpy

D) Oxidation

3 / 20

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

A) Non- competitive inhibition

B) Competitive inhibition

C) Irreversible inhibition

D) Feedback Inhibition

4 / 20

4. Active site of enzyme is produced by:

A) Both a and b

B) Globular structure

C) Fibrous structure

D) Charges

5 / 20

5. A complete enzyme is:

A) Holoenzyme

B) Coenzyme

C) Apoenzyme

D) Cofactor only

6 / 20

6. An enzyme at below 5° C is:

A) Denatured

B) Destroyed

C) Un-activated

D) Activated

7 / 20

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

A) Amylase

B) Diastase

C) Protease

D) Lipase

8 / 20

8. Starch is converted into maltose by:

A) Hydrozenase

B) Maltase

C) Invertase

D) Diastase

9 / 20

9. Active enzymes present in:

A) Viroids

B) Mycoplasma

C) Viruses

D) Prions

10 / 20

10. A metabolic pathway is a:

A) Route taken by chemicals through a solution

B) Route taken by a single particular enzyme

C) Routes taken by all enzymes in a specific medium

D) Sequence of enzyme controlled reactions

11 / 20

11. Enzyme study is:

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

B) impossible

C) invitro possible

D) in vivo possible

12 / 20

12. Protein into peptones by:

A) both A and B

B) Erypsin

C) Trypsin

D) Pepsin

13 / 20

13. Co-enzyme is often a:

A) Vitamin

B) Protein

C) Inorganic ion

D) Lipid

14 / 20

14. Co-enzyme is often formed from:

A) Protein

B) Vitamin

C) Lipid

D) Inorganic ion

15 / 20

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

A) Up

B) Up then down

C) Down

D) Down then up

16 / 20

16. Which one is hydrolase?

A) Polymerase

B) Amylase

C) All of these

D) Enolase

17 / 20

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

A) Competitive inhibition

B) Rise in temperature

C) Accumulation of end product

D) Lack of substrate

18 / 20

18. A group of enzymes called hydrolases acts upon:

A) Lipids

B) All of these

C) Carbohydrate

D) Proteins

19 / 20

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

A) Kinases

B) Isozyme

C) Apoenzyme

D) Dehydrogenases

20 / 20

20. Enzyme groups recognized by IUB:

A) 4

B) 6

C) 8

D) 2

Your score is

Biology Chapter Enzymes MCQs With Answers

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