Live Education Quiz

9th Biology Chapter6 Enzymes

Sr #QuestionsABCD
1

Who proposed lock and key 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

Chemically enzymes are:

Protein Carbohydrates Lipids Fats
4

Lock and key model was proposed in:

1894 1896 1898 1890
5

Which one is an organic cofactor?

Flavin Heme Both 1 & 2 None
6

Catalytic region of enzyme is called:

Cofactor Coenzyme Prosthetic group Active site
7
8

Starch is broken down by an enzyme called:

Lipase Pepsin Amylase All of these
9

Which enzyme breaks the peptide bond?

Amylase Protease Lipase None
10

Enzyme that acts on lipid is called:

Protease Lipase Amylase Pepsin
11

Which enzyme converts lipids into fatty acid and glycerol?

Lipase Amylase Pepsin Trypsin
12

The concept of mechanism was first of all given by:

Ibn e Nafees Winhelm Kuhne Emil Fischer Daniel Koshland
13

Who proposed induced-fit model?

Winhelm Kuhne Daniel Koshland Emil Fischer Ibn-e-Nafees
14

Activation energy is required to:

Activate enzyme Start a reaction Speed up a reaction None
15

In which year the induced-fit model was proposed?

1952 1954 1956 1958
16

Optimum temperature for enzymes in human body is:

36°C 37°C 38°C 40°C
17

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

Protease Amylase Lipase All of these
18

Molecule on which enzymes act is called:

Substrate Co-enzyme Protein Substrate-enzyme complex
19

Number of discovered enzymes are:

200 2000 3000 3500
20

Which of the following vitamins act as coenzyme?

Riboflavin Thiamine Folic acid All of these
21

Term “metabolism” derived from the Greek words means:

Split Change Division Break