Q.1.
The first stable compound of Krebs cycle is … ..
-
50%
a) Acetyl CoA
-
17%
b) Citric acid
-
33%
c) Oxaloacetic acid
-
0%
d) Fumaric acid
Q.2.
After glycolysis, fat of glucose in mitochondrial matrix is … .. [ AIIMS 2011]
-
17%
a) Hydrolysis
-
83%
b)Oxidative decarboxylation
-
0%
c) Reduction
-
0%
d) Oxidation
Q.3.
Oxidative decarboxylation occurs during the reaction … .. [ MHTCET 2010]
-
33%
a) Citrate → Isocitrate
-
67%
b) Pyruvic acid → Acetyl CoA
-
0%
c) Succinate → Fumarate
-
0%
d) Fumarate → Malate
Q.4.
Oxalosuccinic acid, a transient intermediary compound of Krebs cycle is … .. [ KCET 2008]
-
17%
a) 4-carbon compound
-
0%
b) 5-carbon compound
-
33%
c) 6-carbon compound
-
50%
d) 3-carbon compound
Q.5.
How much usable energy is available during oxidative combustion of 1 gm mole of glucose in the body ? [ RPMT 1996]
-
33%
a) 686000 cal
-
0%
b) 304000 cal
-
50%
c) 277400 cal
-
17%
d) 686 cal
Q.6.
R.Q. is one in case of .. … [ JKCMEE 2008]
-
17%
a) Fatty acids
-
67%
b) Carbohydrates
-
17%
c) Nucleic acid
-
0%
d) Organic acids
Q.7.
Pyruvate dehydrogenase complex needed for conversion of pyruvic acid to acetyl CoA is located in … .. [ KCET 2010]
-
0%
a) Intermembrane space
-
17%
b) Cytoplasm
-
67%
c) Matrix of mitochondria
-
17%
d) Grana of chloroplast
Q.8.
Chemiosmosis was first described by … .. [ CET Chd. 2010]
-
0%
a) Boyer
-
20%
b) Walker
-
80%
c) Mitchell
-
0%
d) Miescher
Q.9.
Select the wrong statement .. …. [ kerala 2011]
-
33%
a) RQ is 0.7 with tripalmitin
-
33%
b) Link compound between glycolysis and Krebs cycle is malic acid
-
33%
c) 36 ATP molecules are produced per glucose molecules in aerobic respiration
-
0%
d) 2 ATP molecules are produced per glucose molecule in anaerobic respiration
Q.10.
Glycolysis … .. [ DPMT 2011]
-
67%
a) Occurs in mitochondria
-
0%
b) Has no connection with ETC
-
33%
c) Reduces 2 molecules of NAD+ per glucose
-
0%
d) Produces no ATP
Q.11.
In ETC, first ATP is formed when hydrogen passes from … …
-
0%
a) FMN and NAD
-
0%
b) FMN to CoQ
-
60%
c) NAD to FMN
-
40%
d) NAD to CoQ
Q.12.
A value of RQ less than one means .. ..[ kerala 2008]
-
20%
a) Carbohydrates are used as respiratory material
-
0%
b) Organic acids are used as respiratory substance
-
40%
c) Oxidation of respiratory substrate consume more O2 than CO2released.
-
40%
d) Oxidation of respiratory substrate consumes less O2 than CO2 released
Q.13.
Pyruvic dehydrogenase is used in converting .. …
-
60%
a) Pyruvic acid to acetyl co-enzyme A
-
20%
b) Pyruvate to glucose
-
0%
c) Glucose to pyruvate
-
20%
d) Pyruvic acid to lactic acid
Q.14.
Carbon dioxide is liberated during … ..[ MPPMT 2004]
-
40%
a) Photosynthesis
-
40%
b) Respiration
-
0%
c) Transpiration
-
20%
d) Ascent of sap
Q.15.
End products of aerobic respiration are … ..[ CBSE 1992]
-
20%
a) Sugar and oxygen
-
20%
b) Water and energy
-
60%
c) Carbon dioxide, water and energy
-
0%
d) Carbon dioxide and energy
Q.16.
NADH of glycolysis reacts with an inorganic element during liberation of energy. The respiration is … … [ RPMT 1992]
-
20%
a) Photorespiration
-
0%
b) Germination
-
40%
c) Aerobic respiration
-
40%
d) Anaerobic respiration
Q.17.
Number of NADH produced during breakdown of one molecule of glucose to 1:3 diphosphoglycerate stage is … .. [ AMU 1993]
-
0%
a) 6
-
0%
b) 4
-
80%
c) 3
-
20%
d) 2
Q.18.
Fructose 1:6 biphosphate split into two triose phosphates by enzyme ….
-
60%
a) Aldolase
-
0%
b)Amylase
-
0%
c) Zymase
-
40%
d) Lipase
Q.19.
Conversion of sugar into alcohol during fermentation is due to direct action of … .. [ AMU 1998]
-
20%
a) Temperature
-
40%
b) Concentration of sugar
-
40%
c) Zymase
-
0%
d) Microorganisms
Q.20.
Anaerobic respiration of animals/humans produces … ..[ AFMC 2002]
-
20%
a) Glucose and O2
-
40%
b) C2H5OH and CO2
-
40%
c) Lactic acid and water
-
0%
d) CO2 and H2O
Q.21.
Green plant kept in light produce ATP from glucose. The process is … .. [ JKCMEE 2000]
-
40%
a) Photophosphorylation
-
0%
b) Glycolysis
-
40%
c) TCA cycle
-
20%
d) Oxidative phosphorylation
Q.22.
Metabolism of one palmitic acid yields ATP … ..[ CBSE 2000
-
0%
a) 36 ATP
-
50%
b) 56 ATP
-
50%
c) 129 ATP
-
0%
d) 48 ATP
Q.23.
A sudden change from anaerobic to aerobic process produces … .[ KCET 2001]
-
75%
a) Pasteur effect
-
25%
b) Emerson effect
-
0%
c) Blackman’s law
-
0%
d) Chargaff’s rule
Q.24.
Sequence of organic acids in Krebs cycle is .. … [ MHTCET 2001]
-
20%
a) Citric acid → oxalosuccinic acid → isocitric acid
-
60%
b) Citric acid → isocitric acid → oxalosuccinic acid
-
20%
c) Isocitric acid → oxalosuccinic acid → Citric acid
-
0%
d) Oxalosuccinic acid → isocitric acid → citric acid
Q.25.
Which one requires oxygen … ..[ AMU 2003]
-
20%
a) fermentation
-
20%
b) EMP pathway
-
60%
c) Pentose phosphate pathway
-
0%
d) None of the above
Q.26.
Krebs cycle starts with the formation of six carbon compound by reaction between … ..[ CPMT 2000]
-
0%
a) Malic acid and acetyl CoA
-
20%
b) Succinic acid and pyruvic acid
-
0%
c) Fumaric acid and pyruvic acid
-
80%
d) Oxalic-acetic acid and acetyl CoA
Q.27.
R.Q of protein rich pulses/Pisum sativum is … ..
-
20%
a) Unity
-
0%
b) Infinity
-
20%
c) More than unity
-
60%
d) Less than one
Q.28.
Metabolic water is the one … .. [ CPMT 1992]
-
20%
a) Used during transamination
-
0%
b) Used during photosynthesis
-
80%
c) Produced during aerobic utilization of glucose
-
0%
d) Produced during condensation or polymerization
Q.29.
Krebs cycle is component of … .. [ AFMC 1996]
-
0%
a) Photosynthesis
-
60%
b) Aerobic respiration
-
40%
c) Anaerobic respiration
-
0%
d) Photorespiration
Q.30.
Energy required to form glucose from pyruvate is equivalent to … .. [ RPMT 1998]
-
80%
a) 32 ATP
-
0%
b) 16 ATP
-
20%
c) 8 ATP
-
0%
d) 4 ATP
Explanation
