Biology- 11 Chapter 3
Enzymes - 7
1.
The prosthetic group heme contains?
a) Potasium
b) Zinc
c) Copper
d) Iron
2.
Heme acts as oxygen carrier in?
a) B and c are correct
b) Myoglobin
c) Cytochrome
d) Haemoglobin
3.
Hematin is found in?
a) Both of these
b) None of these
c) Peroxidases
d) Catalases
4.
When the cofactor is a non protein organic molecule it is called as?
a) Active site
b) Holoenzyme
c) Apoenzyme
d) Coenzyme
5.
Which one of the following is not a coenzyme?
a) Fadh2
b) Hydrolase
c) Nadh
d) Nadph
6.
Which one of the following models explain the mechanism of enzyme action?
a) Fluid mosaic model
b) Induced fit model
c) B and d are correct
d) Lock and key model
7.
Lock and key model was proposed by?
a) Engelmann
b) Mendel
c) E. Fischer
d) Koshland
8.
The lock and key model was proposed in?
a) 1794
b) 1894
c) 1694
d) 1994
9.
Lock and key model assumes that a specific enzyme?
a) Catalyze many substrates
b) Catalyze all substrates
c) Catalyze a particular substrate
d) Catalyze two substrates
10.
Enzymes which work on the mechanism of lock and key model are called as?
a) Regulatory enzymes
b) Holoenzymes
c) Apoenzymes
d) Non regulatory enzymes
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