141.
Which of the following cytochrome donates electron to oxygen
A
Cyt-a1
B
Cyt-a3
C
Cyt-b
D
Cyt-c
Answer :
Cyt-a3
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142.
How the presence of an enzyme affects the activation energy of a reaction
A
It becoems increased
B
It becomes decreased
C
It is first increased and then decreased
D
Activation energy in not affected at all
Answer :
It becomes decreased
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143.
The enzymes hexokinase which catalyses glucose to glucose-6-phosphate in glycolysis is inhibited by glucose-6-phosphate. This is an example of
A
competitive inhibition
B
non-competitive inhibition
C
feedback allosteric inhibition
D
positive feedback
Answer :
feedback allosteric inhibition
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144.
Which of the following is the product of glucose fermentation by yeast
A
C6H12O6
B
C2H5OH
C
C6H10O5
D
CH2OH
Answer :
C2H5OH
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145.
Which of the following is a C4 plant
A
Sugaranse
B
Mango
C
Apple
D
Tomato
Answer :
Sugaranse
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146.
Which of the colour of light is mostly absorbed by chlorophyll 'a'
A
Green
B
Red
C
Blue
D
Infra red
Answer :
Blue
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147.
End product of glycolysis is
A
acetyl CoA
B
pyruvic Acid
C
glucose 1-phosphate
D
fructose 1-phosphate
Answer :
pyruvic Acid
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148.
Direct gain of ATP from one mole of blucose during glycolysis or EMP pathway
A
2 ATP
B
6 ATP
C
36 ATP
D
38 ATP
Answer :
2 ATP
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149.
Gluconeogenesis is
A
Formation of glucose from sou rces other than carbohydrate
B
Foramtion o glycogen
C
Brakdown of glucose
D
Foramtion of ammonia from glucose
Answer :
Formation of glucose from sou rces other than carbohydrate
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150.
Number of ATP produced from one pyruvic acid during conversion to acetyl CoA
A
6
B
3
C
12
D
15
Answer :
3
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