Live Education Quiz

9th Biology Chapter6 Enzymes

Sr #QuestionsABCD
1

Which of the following vitamins act as coenzyme?

Riboflavin Thiamine Folic acid All of these
2

Molecule on which enzymes act is called:

Substrate Co-enzyme Protein Substrate-enzyme complex
3

Lock and key model was proposed in:

1894 1896 1898 1890
4

Which enzymes are used in dish washing to remove resistant starch residues?

Protease Amylase Lipase All of these
5

Optimum temperature for enzymes in human body is:

36°C 37°C 38°C 40°C
6

Term “metabolism” derived from the Greek words means:

Split Change Division Break
7

The concept of mechanism was first of all given by:

Ibn e Nafees Winhelm Kuhne Emil Fischer Daniel Koshland
8

Who proposed lock and key model?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
9

Activation energy is required to:

Activate enzyme Start a reaction Speed up a reaction None
10

Starch is broken down by an enzyme called:

Lipase Pepsin Amylase All of these
11

Which one is an organic cofactor?

Flavin Heme Both 1 & 2 None
12

In which year the induced-fit model was proposed?

1952 1954 1956 1958
13

Enzyme that acts on lipid is called:

Protease Lipase Amylase Pepsin
14

Number of discovered enzymes are:

200 2000 3000 3500
15

Catalytic region of enzyme is called:

Cofactor Coenzyme Prosthetic group Active site
16

Who proposed induced-fit model?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
17
18

Which enzyme breaks the peptide bond?

Amylase Protease Lipase None
19

Who first used the term enzyme?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
20

Which enzyme converts lipids into fatty acid and glycerol?

Lipase Amylase Pepsin Trypsin
21

Chemically enzymes are:

Protein Carbohydrates Lipids Fats