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

5366

ENZYMES

1 / 20

1. A metabolic pathway is a:

A) Route taken by chemicals through a solution

B) Sequence of enzyme controlled reactions

C) Routes taken by all enzymes in a specific medium

D) Route taken by a single particular enzyme

2 / 20

2. An enzyme at below 5° C is:

A) Activated

B) Destroyed

C) Un-activated

D) Denatured

3 / 20

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

A) Accumulation of end product

B) Rise in temperature

C) Lack of substrate

D) Competitive inhibition

4 / 20

4. Active site of enzyme is produced by:

A) Both a and b

B) Fibrous structure

C) Globular structure

D) Charges

5 / 20

5. Co-enzyme is often a:

A) Vitamin

B) Protein

C) Inorganic ion

D) Lipid

6 / 20

6. A group of enzymes called hydrolases acts upon:

A) All of these

B) Lipids

C) Carbohydrate

D) Proteins

7 / 20

7. Which one is hydrolase?

A) All of these

B) Polymerase

C) Amylase

D) Enolase

8 / 20

8. Enzyme groups recognized by IUB:

A) 6

B) 8

C) 4

D) 2

9 / 20

9. Co-enzyme is often formed from:

A) Inorganic ion

B) Lipid

C) Vitamin

D) Protein

10 / 20

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

A) Up then down

B) Down

C) Up

D) Down then up

11 / 20

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

A) Apoenzyme

B) Isozyme

C) Kinases

D) Dehydrogenases

12 / 20

12. Starch is converted into maltose by:

A) Maltase

B) Hydrozenase

C) Invertase

D) Diastase

13 / 20

13. A complete enzyme is:

A) Apoenzyme

B) Holoenzyme

C) Coenzyme

D) Cofactor only

14 / 20

14. Active enzymes present in:

A) Viroids

B) Prions

C) Viruses

D) Mycoplasma

15 / 20

15. Sucrase (invertase) acts on:

A) Sucrose

B) Sucrose and starch

C) Any organic Monomer

D) Any disaccharide

16 / 20

16. Protein into peptones by:

A) Trypsin

B) Pepsin

C) both A and B

D) Erypsin

17 / 20

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

A) Oxidation

B) Activation

C) Enthalpy

D) Entropy

18 / 20

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

A) Lipase

B) Amylase

C) Diastase

D) Protease

19 / 20

19. Enzyme study is:

A) invitro possible

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

C) in vivo possible

D) impossible

20 / 20

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

A) Non- competitive inhibition

B) Irreversible inhibition

C) Competitive inhibition

D) Feedback Inhibition

Your score is

Biology Chapter Enzymes MCQs With Answers

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