Mechanism of aerobic respiration/tricarboxylic acid pathway was discovered by … .. [ AFMC 2004]
12%
a) Calvin
50%
b) Krebs
12%
c) Pasteur
25%
d) Hatch and Slack
Q.4.
Dough kept overnight is warm place become soft anad spongy due to … ..[ CBSE 2004]
43%
a) Osmosis
14%
b) Absorption of CO2 from atmosphere
0%
c) Cohesion
43%
d) Fermentation
Q.5.
Single turn of citric acid cycle yields … .[ Kerala 2005]
50%
a) 2FADH2 , 2NADH2, 2GTP
17%
b) 1FADH2 , 2NADH2, 1GTP
33%
c) 1FADH2 , 3NADH2, 1GTP
0%
d) 1FADH2 , 4NADH2, 1GTP
Q.6.
Alcoholic fermentation occurs in the presence of … .. [
67%
a) Zymase
17%
b) Amylase
17%
c) Invertase
0%
d) Maltase
Q.7.
In glycolysis, 6C compounds are split into 3-C compounds by enzyme .. .[ Odisha 2007]
0%
a) Isomerase
33%
b) Aldolase
50%
c) Hexokinase
17%
d) Dehydrogenase
Q.8.
F1 particle of oxysome … … [ MHTCET 2009]
33%
a) Releases proton energy
67%
b) Utilises proton energy
0%
c) Has no role in energy consumption
0%
d) Lies in outer chamber
Q.9.
Number of ATP molecules produced from 1 glucose molecule in aerobic respiration … ..[ AIIMS 2012]
67%
a) 36
0%
b) 32
33%
c) 30
0%
d) 28
Q.10.
In alcoholic fermentation, two molecules of glucose produce ethanol and CO2 respectively … ..[ AMU 2011]
60%
a) 2+2
20%
b) 3+3
20%
c) 4+4
0%
d) 6+6
Q.11.
Energy currency ( reservoir) of the cells is … ..[ AMU 2001]
0%
a) AMP
100%
b) ATP
0%
c) ENA
0%
d) DNA
Q.12.
The amount of energy given by one mole of ATP is … ..[ CBSE 1996]
40%
a) 7.3 kcal
40%
b) 721 kcal
20%
c) 7600 kcal
0%
d) 1000 kcal
Q.13.
Connecting link between glycolysis and Krebs cycle is/before entering Krebs cycle pyruvate is changed to … … [ CBSE 1997]
60%
a) Oxaloacetate
0%
b) PEP
0%
c) Pyruvate
40%
d) Acetyl CoA
Q.14.
Terminal cytochrome of respiratory chain which donates electrons to oxygen is … .. [ CBSE 1992]
0%
a) Cyt.b
20%
b) Cyt.c
20%
c) Cyt.a1
60%
d) Cyt.a3
Q.15.
Which would be the last substrate to be used in respiration? … … [ AMU 1993]
40%
a) Carbohydrate
40%
b) Protein
20%
c) Fat
0%
d) Organic acids
Q.16.
Iron-porphyrin protein complex occurs in .. .. [ BHU 1996]
40%
a) Cytochrome
20%
b) Chlorophyll
20%
c) Phytochrome
20%
d) Both a and b
Q.17.
αKetoglutarate dehydrogenase brings about … .. [ AMU 1997]
100%
a) Oxidation and decarboxylation
0%
b) Oxidation
0%
c) Decarboxylation
0%
d) Reduction
Q.18.
Substrate phosphorylation occurs during … … [ JIPMER 1997]
0%
a) Fumaric acid → Malic acid
20%
b) Oxalosuccinic acid → α-Ketoglutaric acid
20%
c) Succinic acid → Fumaric acid
60%
d) α-Ketoglutaric acid → Succinic acid
Q.19.
Before entering respiratory pathway, amino acids are … ..[ RPMT 1998]
60%
a) Decarboxylated
0%
b) Hydrolysed
20%
c) Deaminated
20%
d) Phosphorylated
Q.20.
Which product of glycolysis is consumed in alcohol fermentation? … [ AMU 1999]
40%
a) NADH2
0%
b) ATP
60%
c) ATP and NADH2
0%
d) CO2
Q.21.
Energy released in aerobic respiration is higher than the one available from anaerobic respiration by … .. [ Har. PMT 2000[
20%
a) 8 times
80%
b) 18 times
0%
c) 28 times
0%
d) 36 times
Q.22.
During glycolysis, glucose is first changed to … .. [ HPPMT 2001]
60%
a) Glucose 6-phosphate
0%
b) Fructose 6-phosphate
40%
c) Glucose 1, 6-phosphate
0%
d) Fructose 1, 6-phosphate
Q.23.
Net/direct gain of ATP molecules formed in glycolysis is gain of ATP molecules formed in glycolysis is … .. [ MHTCET 2011]
0%
a) Oxidative carboxylation
33%
b) Oxidative decarboxylation
17%
c) Dehydrogenation
50%
d) Hydrogenation and decarboxylation
Q.24.
At the end of citric acid cycle most of the energy is transferred to … ..[ AMU 2002]
40%
a) NADH and FADH2
40%
b) Oxaloacetic acid
0%
c) Citric acid
20%
d) ATP
Q.25.
Two names referring to same thing … ..[ CBSE 2003]
20%
a) Krebs cycle and Calvin cycle
80%
b) Tricarboxylic acid cycle and citric acid cycle
0%
c) Citric acid cycle and Calvin cycle
0%
d) Tricarboxylic acid cycle and urea cycle
Q.26.
Match and find the correct combination ... ...[ JKCMEE 2003] a) respiration in bacteria b) Respiration in cyanobacteria c) respiration in eukaryotic cells d) Mitochondria e) Cytoplasmic membrane f) mesosomes
20%
a) a – e, b – f, c – d
60%
b) a – f, b – e, c – d
0%
c) a – d, b – f, c –e
20%
d) a – e, b – d, c –f
Q.27.
An enzyme absent in mitochondrial ETS is .. .. [ Har PMT 2003]
60%
a) FeS protease
20%
b) Glucose 6-phosphate dehydrogenase
20%
c) NADH dehydrogenase
0%
d) Cytochrome c-oxidase
Q.28.
How many ATP molecules are released when one molecule of glucose is oxidized in our liver cells? … .[ CPMT 2005]
50%
a) 36
50%
b) 38
0%
c) 2
0%
d) 8
Q.29.
During night, a person should not sleep under a tree because the tree … ..[ Maipal 2006]
60%
a) Release O2 during night
0%
b) Does not release CO2 during night
20%
c) Releases CO2 during night
20%
d) Releases water during guttation
Q.30.
Chemiosmosis theory of ATP synthesis in chloroplasts and mitochondria is based on … …[ CBSE 2005]
0%
a) Membrane potential
0%
b) Accumulation of Na+ ions
20%
c) Accumulation of K+ ions
80%
d) Proton gradient
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