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Quiz 3
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Q.1
lyceraldehyde phosphate is oxidized in glycolysis. What is fate of hydrogen atom and electron liberated. They cause …
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a) Oxidation of NAD+
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b) Reduction of NAD+
0%
c) Change in oxaloacetic acid
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d) Formation of methane
Explanation
Answer : (b)
Q.2
Aerobic respiratory pathway is appropriately termed … .. [CBSE 2009]
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a) Anabolic
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b) Catabolic
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c) Amphibolic
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d) Parabolic
Explanation
Answer : (c)
Q.3
The energy releasing metabolic process in which substrate is oxidized without as external electron acceptor is … ..[ CBSE 2010]
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a) Fermentation
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b) Aerobic respiration
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c) Photorespiration
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d) Glycolysis
Explanation
Answer : (a)
Q.4
Mitochondria are sites of … ..[ CMC 2003]
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a) Oxidative phosphorylation
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b) Photolysis
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c) Phosphorylation
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d) Starch synthesis
Explanation
Answer : (a)
Q.5
In Kreb’s cycle , a six carbon compound is formed by the combination of Acetyl CoA and
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a) Citric acid
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b)malic acid
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c) oxaloacetic acid
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d) succinic acid
Explanation
Answer : (c)
Q.6
aximum amount of energy /ATP is liberated on oxidation of … ..[ CBSE 1994]
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a) Fat
0%
b) Proteins
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c) Starch
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d) Vitamins
Explanation
Answer : (a)
Q.7
Out of 38 ATP molecules produced per glucose 34 ATP molecules are formed from NADH/FADH2 in … .. [ CBSE 1993]
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a) Respiratory chain
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b) Krebs cycle
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c) Oxidative decarboxylation
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d) EMP
Explanation
Respiratory chain In the respiratory chain, the NADH and FADH2 that was accumulated in the preceding degradation pathways is finally disposed of by reacting it with molecular oxygen. One glucose gives 10 NADH, 2 FADH2, One NADH hives 3ATP Thus 10 NADH gives 30 One FADH2 gives 2ATP , 2FADH2 gives 4 Total 34 Answer : (a)
Q.8
onversion of ATP to ADP releases … .. [ Manipal 1995]
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a) Energy
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b) Enzyme
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c) Hormone
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d) Electricity
Explanation
Answer : (a)
Q.9
Which one can respire in the absence of oxygen? .. .. [ RPMT 1996]
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a) Seeds
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b) Leaves
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c) Stem
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d) Root
Explanation
Answer : (a)
Q.10
Pyruvic acid is formed at the end of …. … [ AFMC 1993]
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a) Calvin cycle
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b) Glycolysis
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c) Krebs cycle
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d) Pentose phosphate pathway
Explanation
Answer : (b)
Q.11
Which is key intermediate compound linkage glycolysis to Krebs cycle? … [ CBSE 1997]
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a) Malic acid
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b) Acetyl CoA
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c) NADH
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d) ATP
Explanation
Answer : (b)
Q.12
Respiration can occur in the absence of oxygen in … ..[ MPPMT 2004]
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b) Spirogyra
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a) Solanum tuberosum
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c) Yeast
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d) Homo sapiens
Explanation
In the respiratory chain, the NADH and FADH2 that was accumulated in the preceding degradation pathways is finally disposed of by reacting it with molecular oxygen. One glucose gives 10 NADH, 2 FADH2, One NADH hives 3ATP Thus 10 NADH gives 30 One FADH2 gives 2ATP , 2FADH2 gives 4 Total 34 Answer : (c)
Q.13
The respiratory enzyme are located in .. ..[ Pb PMT 1997]
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a) Mitochondrial matrix
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b) Peri Mitochondrial space
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c) Cristae
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d) Outer membrane
Explanation
Answer : (a)
Q.14
Krebs cycle takes place in …. [ AMU 2000]
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a) Vesicles of E.R.
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b) Mitochondria
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c) Dictyosomes
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d) Chloroplasts
Explanation
Answer : (b)
Q.15
The first stable compound of Krebs cycle is … ..
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a) Acetyl CoA
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b) Citric acid
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c) Oxaloacetic acid
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d) Fumaric acid
Explanation
Answer : (c)
Q.16
Energy liberated during respiration is stored as … .. [ MHTCET 2010]
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a) ATP
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b) ADP
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c) FAD
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d) NADP
Explanation
Answer : (a)
Q.17
Which group of scientists discovered glycolysis …. ..
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a) Embden, Merrison and pitches
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b) Embden,Meyerhof and Parnas
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c) Emerson, Hoffman and Peterson
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d) Avery, Macleoid and Mc Carthy
Explanation
Answer : (b)
Q.18
Which is correct for catabolism of 18 C fatty acid … .. [ AMU 2009]
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a) Mitochondria, beta oxidation, 148 ATP molecules
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b) Mitochondria, beta oxidation, 140 ATP molecules
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c) Cytosol, beta oxidation, 146 ATP molecules
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d) Cytosol, beta oxidation, 140 ATP molecules
Explanation
Answer : (a)
Q.19
Find out the correct options … [ BHU 2008] 1) Copper is present in cytochrome oxidase 2) Pantothenic acid is precursor of CoA 3) Thymine pyrophosphate is prosthetic group in decarboxylases 4) Zinc is present in RNA and DNA polymerases
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a) 1, 2, 3 correct
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b) 1, 2 correct
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c) 2,4 correct
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d) 1, 3 correct
Explanation
Answer : (b)
Q.20
Ratio of volume of CO2 liberated to volume of O2 consumed is … ..
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a) CQ CO2/O2
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b) RQ CO2/O2
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c) MQ O2/CO2
0%
d) PQ O2/CO2
Explanation
Answer : (b)
Q.21
A molecule of ATP is formed as an electron passes from … .. [ Manipur 2007]
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a) Cyt c to Cyt a
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b) Cyt b to Cyt c
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c) Cyt a to Cyt c
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d) Cyt c to Cyt b
Explanation
Answer : (b)
Q.22
How many ATP molecules could maximally be generated from one molecules of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and useful chemical energy available in high energy phosphate bond of one mole of ATP is 12 kcal … ..[ CBSE 2006]
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a) 1
0%
b) 2
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c) 30
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d) 57
Explanation
Answer : (d)
Q.23
Which of the following is an important intermediate formed in all types of respiration? … .[ Wardha 2005]
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a) Acetyl CoA
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b) Oxaloacetate
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c) Pyruvic acid
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d) Tricarboxylic acid
Explanation
Answer : (c)
Q.24
Pasteur effect can be studied in case of … .. [ KCET 2004]
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a) Nostoc
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b) Penicillium
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c) Pinnularia
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d) Saccharomyces
Explanation
Answer : (d)
Q.25
In alcohol fermentation … .
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a) Triose phosphate is electron donor while acetaldehyde is electron acceptor
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b) Triose phosphate is electron donor while pyruvic aci is electron acceptor
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c) There is no electron donor
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d) Oxygen is electron acceptor
Explanation
Answer : (a)
Q.26
Fermentation is … ..[ RPMT 2002]
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a) Incomplete oxidation
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b) Anaerobic respiration
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c) Excretory process
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d) None of the above
Explanation
Answer : (b)
Q.27
Enzymes located in mitochondrial membrane are … … [ JIPMER 2000]
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a) Enolase and catalase
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b) Flavoproteins and cytochromes
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c) Hexokinase and zymase
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d) Citrate synthetase and glutamate dehydrogenase
Explanation
Answer : (b)
Q.28
Production of alcohol by Yeast fermentation is … .. process … ..[ Pb. PMT 1998]
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a) Anaerobic
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b) Aerobic
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c) Light dependent
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d) Both a and c
Explanation
Answer : (a)
Q.29
Fermentation produces … .. [ CBSE 1996]
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a) Protein and acetic acid
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b) Alcohol and lipoprotein
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c) Alcohol, lactic acid etc
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d) Ethers and acetones
Explanation
Answer : (c)
Q.30
In animal cells, the first stage of glucose breakdown is … .. [ CBSE 1994]
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a) Krebs cycle
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b) Glycolysis
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c) Oxidative phosphorylation
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d) E.T.C.
Explanation
Answer : (b)
0 h : 0 m : 1 s
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