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