Respiratory quotient ( R.Q.) is … .. [ kerala 2006]
33%
a) Volume of O2 evolved/Volume of CO2 consumed
67%
b) Volume of CO2 evolved/Volume of O2 consumed
0%
c) Volume of O2 consumed/ Volume of CO2 evolved
0%
d) Volume of CO2 consumed/Volume of O2 evolved
Q.2.
ATP synthesis proposed by Peter Mitchell is … ..
0%
a) Phosphorylation
60%
b) Photophosphorylation
20%
c) Oxidative phosphorylation
20%
d) Chemiosmotic synthesis
Q.3.
Enzyme of TCA which is located in in inner mitochondrial membrane in eukaryotes and cytosol in prokaryotes is … .. [ CBSE 2007]
0%
a) Lactate dehydrogenase
20%
b) Malate dehydrogenase
20%
c) Isocitrate dehydrogenase
60%
d) Succinate dehydrogenase
Q.4.
Which cell does not respire .. ..[ Her PMT 2007]
25%
a) RBC
0%
b) Sieve tube cell
0%
c) Epidermal cell
75%
d) Cork cell
Q.5.
In which step of Krebs cycle, CO2 is evolved … .. [ AMU 2010]
25%
a) Isocitric acid → Oxalosuccinic acid
0%
b) Succinic acid → Fumaric acid
50%
c) Oxalosuccinic acid → αketoglutaric acid
25%
d) Maleic acid → Oxaloacetic acid
Q.6.
In anaerobic respiration, 4 molecules of glucose produce … .. [ Guj CET 2008]
0%
a) 144 ATP,
25%
b) 20 ATP
50%
c) 16 ATP
25%
d) 8 ATP
Q.7.
Calorie is the unit of .. … [ DPMT 2009]
0%
a) Sound
0%
b) Light
100%
c) Heat
0%
d) Temperature
Q.8.
Reduction of NAD+ does not occur in the reaction … .. [Guj CET 2009]
33%
a) Pyruvic acid → Acetyl CoA
0%
b) Isocitric acid → α-ketoglutaric acid
67%
c) Malic acid → Oxaloacetic acis
0%
d) Succinic acid → Fumaric acids
Q.9.
Which of the following membrane bound complex in mitochondria is not a proton pump … [ CET Chd 2010]
0%
a) Cytochrome b, c
25%
b) Cytochrome c oxidase
25%
c) NADH dehydrogenase
50%
d) Succinate dehydrogenase
Q.10.
Which of the following is used as a cellular respiration indicator … [ CET Chd 2010]
50%
a) Tetrazolium chloride
0%
b) Ethanol
25%
c) Schiff’s reagent
25%
d) lactic acid
Q.11.
ATP does not provide phosphate in the reaction .. ..[ MHTCET 2011]
25%
a) Glucose → Glucose 6-P
0%
b) Fructose → Fructose 6-P
50%
c) PGAL → 1:3-diPGA
25%
d) PEPA → Pyruvic acid
Q.12.
The reactions of Kerba cycle take place .. ..[ BHU 1991]
0%
a) In the cytoplasm
50%
b) In ER
50%
c) In matrix of mitochondria
0%
d) On the surface of mitochondria
Q.13.
Enzyme taking part in glycolysis are present in … ..[ MPPMT 1996]
0%
a) Mitochondria
50%
b) Cytoplasm
50%
c) Both mitochondria and cytoplasm
0%
d) Vacuole
Q.14.
Maximum energy becomes available per mole of glucose when it is metabolized through … ..[ CBSE 1999]
0%
a) Glycolysis in skeletal muscle of a sprinter
67%
b) Fermentation into ethanol by yeast
0%
c) Fermentation into methanol by enteric bacteria
33%
d) Aerobic respiration
Q.15.
In electron transport system (ETS) which of the following cytochromes reacts with oxygen … [ Kerala 2005]
0%
a) Cyt a3
67%
b) Cyt b
0%
c) Cyt b3
33%
d) Cyt b6
Q.16.
Overall goal of glycolysis, Krebs cycle and electron transport system is formation of .. .. [ CBSE 2007]
100%
a) ATP in small stepwise units
0%
b) ATP in one large oxidation reaction
0%
c) Sugars
0%
d) Nucleic acid
Q.17.
Which is wrong about Krebs cycle .. ..[ KCET 2007]
0%
a) It occurs in mitochondria
67%
b) It starts with 6 carbon compound
0%
c) It is also called citric acid cycle
33%
d) Glycolysis is lined to it through malic acid
Q.18.
3-phosphoglyceraldehyde is oxidized in glycolysis to form … ..[ MHTCET 2008]
50%
a) 1,3-biphosphoglycerate
25%
b) 3-phosphoglycerate
0%
c) 2-phosphoglycerate
25%
d) Phosphoenolpyruvate
Q.19.
Which of the following respiratory substrate requires highest number of oxygen molecules for its complete oxidation .. ..[ EAMCET 2009]
0%
a) Triolein
33%
b) Oleic acid
33%
c) Tripalmitin
33%
d) Tartaric acid
Q.20.
R.Q. is less than one if the respiratory substrate is … .[ Manipal 2005]
0%
a) Organic acids
100%
b) Fats and proteins
0%
c) Sucrose
0%
d) Glucose
Q.21.
R.Q for fatty substance/fat is … ..[ KCET 1999]
0%
a) Unity
100%
b)Less than one
0%
c) Greater than one
0%
d) Zero
Q.22.
The enzyme which converts glucose to glucose 6-phosphate is .. .. [ MPPMT 1996]
0%
a) Phosphorylases
50%
b) Glucose-6-phosphatase
50%
c) Hexokinase
0%
d) Glucose synthetase
Q.23.
Raw material of respiration is … ..[ RPMT 1991]
0%
a) Glucose and fructose
0%
b) Glucose and sucrose
100%
c) Glucose + O2
0%
d) Glucose + CO2
Q.24.
R.Q. is less than one when the respiratory substrate is … ..[ CPMT 1994]
0%
a) Sucrose
50%
b)Fat
50%
c) Glucose
0%
d) Organic acid
Q.25.
First reduction in pentose phosphate pathway is … ..[ CPMT 1991]
0%
a) Oxidation of 6-phosphogluconate
50%
b) Oxidation of fructose 6-phosphate
0%
c) Oxidation of glucose 6-phosphate
50%
d) Oxidation of fructose 5-phosphate
Q.26.
Chemiosmotic theory of ATP synthesis in mitochondrion is based on … .. [ KCET 2012]
0%
a) K+ gradient
67%
b) H+ gradient
0%
c) Na+ gradient
33%
d) Ca2+ gradient
Q.27.
Substrate level phosphorylation in Krebs cycle occurs during conversion of … .. [ kerala 2011]
0%
a) Succinate to malate
0%
b) Succinyl CoA to Succinate
100%
c) Malate to Fumarate
0%
d) Malate to oxaloacetate
Q.28.
R.Q. for tripalmitin as respiratory substrate is … .. [ HPPMT 2010]
0%
a) 0.7
50%
b) 1.0
50%
c) 0.9
0%
d) > 1
Q.29.
How many PGAL are produced by glycolysis of three molecules of glucose? How many ATP are released by respiration of these PGAL till formation of CO2 and H2O … .. [ GujCET 2009]
50%
a) H2O
0%
b) H+
0%
c) Electrons
50%
d) All the above
Q.30.
Chemiosmotic coupling hypothesis of oxidative phosphorylation proposes ATP synthesis because of … …. [ CBSE 2008]
33%
a) Proton gradient forms across inner membrane
33%
b) Changed impermeability of inner mitochondrial membrane to ADP
33%
c) High energy bonds are formed in mitochondrial proteins
0%
d) ADP is pumped out of the matrix into intermembrane space
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