Chapter 6: Enzymes - Biology Mcqs for High School - Grade 9 - Set 4

1)   The low pH in which pepsin works is considered as

a. nuclear medium
b. synthetic medium
c. acidic medium
d. alkaline medium
Answer  Explanation 

ANSWER: acidic medium

Explanation:
No explanation is available for this question!


2)   The reactions are catalyzed by

a. nitrogen
b. potassium
c. enzyme
d. magnesium
Answer  Explanation 

ANSWER: enzyme

Explanation:
No explanation is available for this question!


3)   In the brewing industry, the enzymes break

a. proteins and sugars
b. proteins and starch
c. proteins and ammonia
d. proteins and alcohol
Answer  Explanation 

ANSWER: proteins and starch

Explanation:
No explanation is available for this question!


4)   The trypsin enzymes work in

a. pancreas
b. buccal cavity
c. large intestine
d. small intestine
Answer  Explanation 

ANSWER: small intestine

Explanation:
No explanation is available for this question!


5)   The enzymes that are used to remove protein stains from the clothes are called

a. protease enzymes
b. amylase enzymes
c. nucleated enzymes
d. coenzymes
Answer  Explanation 

ANSWER: protease enzymes

Explanation:
No explanation is available for this question!


6)   The globular proteins are known as

a. bi-enzymes
b. enzymes
c. coenzymes
d. inhibit enzymes
Answer  Explanation 

ANSWER: enzymes

Explanation:
No explanation is available for this question!


7)   The model proposed by Daniel Koshland is

a. anabolism-fit model
b. catabolism-fit model
c. induced-fit model
d. reduced-fit model
Answer  Explanation 

ANSWER: induced-fit model

Explanation:
No explanation is available for this question!


8)   The biochemical reaction in which large molecules are broken down into smaller ones is classified as

a. catabolism
b. parasitism
c. materialism
d. anabolism
Answer  Explanation 

ANSWER: catabolism

Explanation:
No explanation is available for this question!


9)   The loss of the globular structure of enzymes is also known as

a. instauration of enzyme
b. denaturation of enzyme
c. maturation of enzyme
d. saturation of enzyme
Answer  Explanation 

ANSWER: denaturation of enzyme

Explanation:
No explanation is available for this question!


10)   The German chemist who explained the enzyme mechanism of action is

a. Jane Hackel
b. John August
c. Jane Olive
d. Emil Fischer
Answer  Explanation 

ANSWER: Emil Fischer

Explanation:
No explanation is available for this question!