Live Education Quiz

9th Biology Chapter6 Enzymes

Sr #QuestionsABCD
1

Who proposed induced-fit model?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
2

Who first used the term enzyme?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
3

Molecule on which enzymes act is called:

Substrate Co-enzyme Protein Substrate-enzyme complex
4

The concept of mechanism was first of all given by:

Ibn e Nafees Winhelm Kuhne Emil Fischer Daniel Koshland
5

Which one is an organic cofactor?

Flavin Heme Both 1 & 2 None
6

Who proposed lock and key model?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
7

Number of discovered enzymes are:

200 2000 3000 3500
8

Starch is broken down by an enzyme called:

Lipase Pepsin Amylase All of these
9

Which of the following vitamins act as coenzyme?

Riboflavin Thiamine Folic acid All of these
10

Activation energy is required to:

Activate enzyme Start a reaction Speed up a reaction None
11

Optimum temperature for enzymes in human body is:

36°C 37°C 38°C 40°C
12

In which year the induced-fit model was proposed?

1952 1954 1956 1958
13

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

Protease Amylase Lipase All of these
14

Enzyme that acts on lipid is called:

Protease Lipase Amylase Pepsin
15

Term “metabolism” derived from the Greek words means:

Split Change Division Break
16
17

Which enzyme converts lipids into fatty acid and glycerol?

Lipase Amylase Pepsin Trypsin
18

Chemically enzymes are:

Protein Carbohydrates Lipids Fats
19

Lock and key model was proposed in:

1894 1896 1898 1890
20

Which enzyme breaks the peptide bond?

Amylase Protease Lipase None
21

Catalytic region of enzyme is called:

Cofactor Coenzyme Prosthetic group Active site