Quiznetik
Biology | Set 36
1. Respiratory quotient and compensation point are
A. Not related
B. Inverse to each other
C. Same
D. Applicable to.all organisms.
Correct : A. Not related
2. RQ = l, is
A. The multiplication O2 consumed O2 and released CQ2
B. The amount of O2, consumed and CO2 released are the same
C. One CO2 molecule more released than O2 molecule consumed
D. One O2 molecule more consumed than CO2 molecules released
Correct : B. The amount of O2, consumed and CO2 released are the same
3. If RQ is 0.7, the substance needs
A. More O2 for respiration
B. Less O2 for respiration
C. O2 is not used for its respiration
D. The substance has more oxygen in its constitution
Correct : A. More O2 for respiration
4. The site of occurrance of all reactions of PPP is
A. Cytosol
B. Mitochondrial matrix
C. Cristae
D. Thylakoid matrix
Correct : A. Cytosol
5. The process occurring during Kreb’s cycle is
A. Decarboxylation and dehydrogenation
B. Decarboxylation, dehydrogenation and phosphorylation
C. Decarboxylation and phosphorylation
D. Dehydrogenation and phosphorylation
Correct : B. Decarboxylation, dehydrogenation and phosphorylation
6. During glycolysis water is released from
A. 2, Phospoglyceric acid
B. Biphosphoglyceric acid
C. Phosphoenol pyruvic acid
D. Phosphoglyceraldehyde
Correct : A. 2, Phospoglyceric acid
7. When human muscle contracts :
A. Respiration does not occur
B. Anaerobic respiration occurs, if supply of oxygen is insufficient
C. Anaerobic respiration never occurs
D. Always anaerobic respiration occurs.
Correct : B. Anaerobic respiration occurs, if supply of oxygen is insufficient
8. The correct sequence of the three processes of aerobic respiration is
A. Glycolysis, Kreb’s cycle, oxidative phosphorylation.
B. Glycolysis, oxidative phosphorylation and Kreb’s cycle
C. Kreb’s cycle, glycolysis and oxidative phosphorylation
D. oxidative phosphorylation, Kreb’s cycle, glycolysis
Correct : A. Glycolysis, Kreb’s cycle, oxidative phosphorylation.
9. During PPP, RuBP is formed in
A. Mitochondria
B. Cytosol
C. Stroma
D. Chloroplas
Correct : B. Cytosol
10. The number of ATP molecules formed in oxidative phosphorylation of one glucose molecule
A. 6
B. 14
C. 28
D. 34
Correct : D. 34
11. The number of ATP molecules formed in oxidative phosphorylation of 1 pyruvic acid
A. 6
B. 14
C. 28
D. 34
Correct : B. 14
12. How much energy spent in transport of one pyruvic acid to mitochondrion ?
A. Energy of 1 ATP
B. No energy
C. Energy of 2 ATP
D. Not certain
Correct : A. Energy of 1 ATP
13. In anaerobic respiration in plants (CM.C 1983, CPM.T. 1992)
A. Oxygen is absorbed
B. Oxygen is released
C. Carbon dioxide is released
D. Carbon dioxide is absorbed.
Correct : C. Carbon dioxide is released
14. Krebs cycle takes place in (CPMT. 1985, 1999, M.P.P.M.T. 1997, AMU. 2000, AFMC 2002, RPMT. 2005)
A. Vesicles of E.R
B. Mitochondria
C. Dictyosomes
D. Chloroplasts.
Correct : B. Mitochondria
15. By ETS, ATP-synthesis occurs on the (A.I.I.M.S. 1984)
A. Outer membrane of mitochondrion
B. Inner membrane of mitochondrion
C. Matrix
D. None of the above
Correct : B. Inner membrane of mitochondrion
16. Energy currency (reservoir) of the cells is (BHU 1984, Kerala 2001, AMU 2003, MPPMT 2002)
A. AMP
B. ATP
C. RNA
D. DNA
Correct : B. ATP
17. Complete oxidation of glucose into pyruvic acid with several intermediate steps is known as (C.B.S.E. 1988;B.H.U. 1986,1989)
A. TCA-pathway
B. Glycolysis
C. HMS-pathway
D. Krebs cycle
Correct : B. Glycolysis
18. When a molecule of pyruvic acid is subjected to anaerobic oxidation and forms lactic acid, there is(RPMT. 1985 BHU. 1985)
A. Loss of 3 ATP molecule
B. Loss of 6 ATP molecules
C. Gain of 2 ATP molecules
D. Gain of 4 ATP molecules
Correct : A. Loss of 3 ATP molecule
19. Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzyme (AMU. 1986)
A. Decarboxylase
B. Dehydrogenase
C. Decarboxylase and dehydrogenase
D. Phosphotase
Correct : C. Decarboxylase and dehydrogenase
20. RQ for fatty substance/fat is (DPMT 1985; Karnataka 1999)
A. Infinity
B. Less than one
C. Greater than one
D. Zero
Correct : B. Less than one
21. RQ for glucose carbohydrate is (D.PM.T. 1985, Bih. PMT. 1990, RPMT. 1996, Wardha2001)
A. 1
B. 0.5
C. 2
D. 0.05
Correct : A. 1
22. An indispensable role in energy metabolism is played by (D.PM.T. 1986)
A. Sodium
B. Phosphorus
C. Calcium
D. Lithium
Correct : B. Phosphorus
23. Instantaneous source of energy is {A.F.M.C. 1983)
A. Glucose
B. Fats
C. Proteins
D. Amino acid.
Correct : A. Glucose
24. ATP equivalents produced during oxidation of succinate to fumarate for one glucose molecule is/are (R.PMT.1988)
A. l
B. 2
C. 3
D. 4
Correct : B. 2
25. Which of the following process is used in the conversion of pyruvate to acetyl CoA ? (D.PM.T. 1987; C.PMT 1990, Kerala 2004)
A. Oxidative decarboxylation
B. Oxidative dehydrogenation
C. Oxidative dehydration
D. Oxidative phosphorylation
Correct : A. Oxidative decarboxylation
26. During ATP synthesis electrons pass through (B.H.U.1980)
A. H2O
B. Cytochromes
C. CO2
D. O2
Correct : B. Cytochromes
27. Net gain of ATP in glycolysis _______ (M.P.PMT. 1988; D.P.M.T. 1983, Pb. PMT. 2000, CPM.T. 2001)
A. 6
B. 2
C. 4
D. 8
Correct : D. 8
28. The universal hydrogen acceptor is ‘ (C.P.M.T. 1980)
A. NAD
B. ATP
C. CoA
D. FMN
Correct : A. NAD
29. Both respiration and photosynthesis require (M.P.PM.T. 1989,1993,1996; CPM.T, 1984, 1988, 1989,-B.H.U. 1995;A.FMC 1995)
A. Sunlight
B. Chlorophyll
C. Glucose
D. Cytochromes
Correct : D. Cytochromes
30. In an organism utilising carbohydrates as its source of energy anaerobically, the R.Q. is likely (UPMER 1983)
A. 0.7
B. 0.9
C. l.0
D. Infinity.
Correct : D. Infinity.
31. In plants energy is produced during the process of (CPMT 1981)
A. Photosynthesi
B. Transpiration
C. Respiration
D. Water absorption
Correct : C. Respiration
32. In respiration pyruvic acid is (MPPMT. 1986, 1988)
A. Formed only when oxygen is available
B. One of the products of Krebs cycle
C. Broken down into a two carbon fragment and CO2
D. A result of protlipid breakdown.
Correct : C. Broken down into a two carbon fragment and CO2
33. Maximum number of ATP is synthcsised during oxidation of (R.PM.T. 1990)
A. β - amino acid
B. Malic acid
C. Palmitic acid
D. Glucose
Correct : C. Palmitic acid
34. NADP+ is reduced to NADPH in (C.B.S.E. 1988)
A. HMP
B. Calvin Cycle
C. Glycolysis
D. EMP
Correct : A. HMP
35. Incomplete breakdown of sugars in anaerobic respiration forms (CPM.T. 1984,1988; M.P.P.M.T. 1987,1989)
A. Fructose and water
B. Glucose and CO2
C. Alcohol and CO2
D. Water and CO2
Correct : C. Alcohol and CO2
36. Which of the following is the source of respiration ? (C.P.M.T. 1979)
A. RNA
B. DNA
C. ATP
D. Stored food
Correct : D. Stored food
37. Raw material of respiration is (R.R.M.T. 199)
A. Glucose and fructose
B. Glucose and sucrose
C. Glucose + O2
D. Glucose + CO2
Correct : C. Glucose + O2
38. Respiration is found in (B.H.V. 1980)
A. In all living cells in light
B. All living cells in dark
C. In all living cells both in light and dark
D. Only in nongreen cells both in light and dark
Correct : C. In all living cells both in light and dark
39. Anaerobic respiration is (CPMT. 1987)
A. Extramolecular respiration
B. Molecular respiration
C. Inter-molecular respiration
D. Intra-molecular respiration.
Correct : D. Intra-molecular respiration.
40. Total gain of energy in anaerobic respiration from one glucose molecule is (CPMT. 1987)
A. Two ATP
B. One ATP
C. Four ATP
D. Three ATP
Correct : A. Two ATP
41. Final electron acceptor in respiration is (B.H.U. 1984, Karnataka 1994; A.F.M.C. 1998, A.M.U. 2001)
A. Hydrogen
B. Oxygen
C. Cytochromes
D. Dehydrogenases
Correct : B. Oxygen
42. Oxidative phosphorylation is found in (M.P.P.M.T. 1987, 2002)
A. Chloroplast
B. Leucoplasts
C. Peroxisomes
D. Mitochondria
Correct : D. Mitochondria
43. In Opunita and other succulents, night time R.Q. is (CPMT, 1986)
A. One
B. More than one
C. Zero
D. Less than one
Correct : C. Zero
44. RQ of protein rich pulses is ‘ (RPMT. 1989)
A. Unity
B. Infinity
C. More than unity
D. Less than one
Correct : D. Less than one
45. Oxidation of a molecule of acetyl CoA produces (RPMT. 1990)
A. 12 ATP
B. 15 ATP
C. 6 ATP
D. 19 ATP
Correct : A. 12 ATP
46. Maximum amount of energy/ATP is liberated on oxidation of (AFMC 1984, 1988; CPMT. 1988; CB.S.E. 1994; AMU 1996)
A. Fat
B. Proteins
C. Starch
D. Vitamins
Correct : A. Fat
47. R.Q. is ratio of ; (C.B.S.E.’1990;A.P.M.E.E. 1999, Glijarat GET Q.B.)
A. CO2 produced to substrate consumed
B. CO2 produced to O2 consumed
C. Oxygen consumed to water produced
D. Oxygen consumed to CO2 produced
Correct : B. CO2 produced to O2 consumed
48. Connecting link between glycolysis and Krebs cycle is/before entering Krebs cycle pyruvate is changed to (A.F.M.C, 1988; CB.S.E. 1992, 1997; R.PMT. 1992; M.P.P.M.T. 1987, 88, 93, 98, 2001, 2002; AMU. 1987, 2001; J.LPME.R; 1989; C.PMT. 1991, 94; D.P.M.T. 1999; A.UMS. 1994, Mampal 200l, BV. 2002, Kerala 2003, 2004)
A. Oxaloacetate
B. PEP
C. Pyruvate
D. Acetyl CoA
Correct : D. Acetyl CoA
49. Apparatus to measure rate of respiration and R.Q. is (C.P.M.T. 1991; C.B.S.E. 1992)
A. Auxanometer
B. Potometer
C. Respirometer
D. Manometer
Correct : C. Respirometer
50. Terminal cytochrome of respiratory chain which donates electrons to oxygen is (CPMT 1989; CBSE, 1992)
A. Cyt b
B. Cyt c
C. Cyt a
D. Cyt a3
Correct : D. Cyt a3
51. R.Q. is maximum when respiratory substrate is (MPPMT. 1992; A.U.M.S. 1992)
A. Glucose
B. Fat
C. Protein
D. Malic acid.
Correct : D. Malic acid.
52. End product of citric add/Krebs cycle is (CBSE. 1993; Har. P.M.T. 1994)
A. Citric acid
B. Lactic acid
C. Pyruvic acid
D. CO2 + H2O
Correct : D. CO2 + H2O
53. Krebs cycle is (AMU. 1993)
A. Oxidation of glucose to alcohol and water
B. Oxidation of acetyl CoA to carbon dioxide and water involving electron transport
C. Complete oxidation of acetyl CoA without electron transport
D. Complete reduction of acetyl CoA to carbon dioxide and water.
Correct : C. Complete oxidation of acetyl CoA without electron transport
54. Most of the biological energy is supplied by mitochondria through (M.P.PMT.1994, AMU. 1998)
A. Breaking of protein
B. Reduction NADP+
C. Breaking of sugars
D. Oxidising TCA substrates.
Correct : D. Oxidising TCA substrates.
55. Which one is a product of glycolysis, besides 2 ATP ? (CPMT. 1995; M.P.PMT. 1998)
A. FAD
B. NADH
C. NAD
D. NADP
Correct : B. NADH
56. The site of Krebs cycle in bacteria is (Bihar P.M.T. 1995)
A. Nucleoid
B. Cytoplasm
C. Plasma membrane
D. Ribosomes
Correct : C. Plasma membrane
57. Which is the product of aerobic respiration? (A.F.M.C 1995)
A. Malic acid
B. Ethyl alcohol
C. Lactic acid
D. Pyruvic acid
Correct : A. Malic acid
58. Which one can respire in the absence of oxygen ? (R.P.M.T. 1996)
A. Seed
B. Leaves
C. Stem
D. Root
Correct : A. Seed
59. Lactic acid fermentation does not produce (A.UMS. 1996; Pb. P.M.T. 1997; AMU. 1999)
A. ATP
B. CO2 and NADH
C. CO2
D. NADH
Correct : B. CO2 and NADH
60. Electron transport system of mitochondria is located in (M.P.PMT. 1997, CPMT. 1999, R.PMT.2000)
A. Outer membrane
B. Inner membrane
C. Inter-cristal space
D. Outer chamber.
Correct : B. Inner membrane
61. In bacteria the site for respiration is (CB.S.E. 1997)
A. Cytoplasm
B. Mesosome
C. Episome
D. Plasmid
Correct : B. Mesosome
62. Which is wrong about cytochrome P-450 ? (C.B.S.E. 1998)
A. Contains iron
B. Is a coloured cell
C. Is an enzyme
D. Plays an important role in metabolism.
Correct : B. Is a coloured cell
63. Production of alcohol by Yeast fermentation is ....... process (Pb. P.M.T. 1998)
A. Anaerobic
B. Aerobic
C. Light dependent
D. Both A and C.
Correct : A. Anaerobic
64. In glycolysis, enzyme enolasc produces (AM.U. 1999)
A. Phosphoglyceric acid
B. Phosphoenol pyruvate
C. Phosphoglyceraldehyde
D. Pyruvate
Correct : B. Phosphoenol pyruvate
65. Oxygen is reduced to water in (Kerala 2000,2006)
A. Fermentation
B. Calvin cycle
C. Electron transport
D. Krebs cycle
Correct : C. Electron transport
66. Cytochrome is (C.B.S.E. 2001)
A. Metalloflavoprotein
B. Fe-containing porphyrin pigment
C. Lipid
D. Glycoprotein
Correct : B. Fe-containing porphyrin pigment
67. Isocitric acid is changed to -oxalosucinic acid by (Tamil.Nadu2001)
A. Oxidative carboxylation
B. Oxidative decarboxylation
C. Dehydrogenation
D. Hydrogenation and decarboxylation.
Correct : B. Oxidative decarboxylation
68. In respiration (Manipal 2002)
A. 2 PGAL are formed in glycolysis and none in Krebs cycle
B. 6 PGAL in glycolysis, 3 PGAL in Krebs cycle
C. 8 PGAL in glycolysis, 3 PGAL in Krebs cycle
D. PGAL formation does not occur in respiration.
Correct : A. 2 PGAL are formed in glycolysis and none in Krebs cycle
69. Glycolysis takes place in (A.F.M.C 2003)
A. All cell
B. Only eukaryotic cells
C. Muscle cells
D. Nerve cells
Correct : A. All cell
70. Which is rich in energy (CE.T. Chd.2003)
A. NAD+
B. Mitochondria
C. FAD
D. ATP
Correct : D. ATP
71. Which one requires oxygen (AMU. 2003)
A. Fermentation
B. EMP pathway
C. Pentose phosphate pathway
D. None of the above
Correct : D. None of the above
72. Mechanism of aerobic respiration was discovered by (A.F.M.C. 2004)
A. Calvin
B. Krebs
C. Pasteur
D. Hatch and Slack
Correct : B. Krebs
73. Which of the following is the first step of glycolysis (C.P.M.T. 2004)
A. Conversion of glucose to fructose
B. Dehydrogenation of glucose
C. Breakdown of glucose
D. Phosphorylation of glucose
Correct : D. Phosphorylation of glucose
74. How many ATP molecules are released when one molecule of glucose is oxidised in our liver cells (CP.M.t:2’ob5)
A. 36
B. 38
C. 2
D. 8
Correct : B. 38
75. RQ of anaerobic respiration is (Wardha2005)
A. < 1
B. 0
C. 1
D. >1
Correct : B. 0
76. Which one is an important intermediate formed in all types of respiration (Wardha2005)
A. Acetyl CoA
B. Oxaloacetate
C. Pyruvic acid
D. Tricarboxylic acid
Correct : C. Pyruvic acid
77. What is RQ of the reaction 2C51H98O6 + 145O2 –– 102CO2 + 98H2O. (Manipal 2005)
A. 0.7
B. l.0
C. l.45
D. l.62
Correct : A. 0.7
78. Single turn of citric acid cycle yields (Kerala2005)
A. 2 FADH2, 2 NADH2, 2 ATP
B. 1 FADH2, 2 NADH2, 1 ATP
C. 1 FADH2, 4 NADH2, 1 ATP
D. 1 FADH2, 1 NADH2, 1 ATP
Correct : C. 1 FADH2, 4 NADH2, 1 ATP
79. RQ is less than one, if the respiratory substrate is (Manipal 2005)
A. Organic acid
B. Fats and proteins
C. Sucrose
D. Glucose
Correct : B. Fats and proteins
80. Enzyme used in conversion of glucose to glucose 6-phosphate is (J.I.PME.R. 2005)
A. Hexokinase
B. Isomerase
C. Phosphokinase
D. Phosphohexokinase
Correct : A. Hexokinase
81. Identify the compound that links glycolysis and Krebs cycle (Karnataka 2005)
A. Oxaloacctate
B. Pyruvic acid
C. Lactic acid
D. Acetyl CoA
Correct : D. Acetyl CoA
82. F0 base of oxysome is towards : (M.H. 2005)
A. Outer chamber
B. Matrix
C. Inner chamber
D. Both B and C
Correct : A. Outer chamber
83. Muscle cells starved of oxygen and supplied with pyruvic acid will produce (M.H. 2005)
A. Ethanol
B. Lactic acids
C. CO2 only
D. CO2 and H2O
Correct : B. Lactic acids
84. Products of anaerobic respiration are (J.I.P.M.E.R. 2005)
A. Water and alcohol
B. Water and oxygen
C. Alcohol and CO2
D. CO2 and water
Correct : C. Alcohol and CO2
85. During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP (C.B.S.E. 2005)
A. Glycolysi
B. Krebs cycle
C. Conversion of pyruvic acid to acetyl CoA
D. Electron transport chain.
Correct : D. Electron transport chain.
86. How many molecules of NADH2 are produced when four molecules of phosphogyceraldehyde arc converted into four molecules of pyruvate (Guj.CET. 2006)
A. 8
B. 2
C. 4
D. 6
Correct : C. 4
87. The overall goal of glycolysis, Krebs cycle and electron transport system is the formation of (C.B.S.E. 2007)
A. ATP in one large oxidation reaction
B. Sugars
C. Nucleic acid
D. ATP in small steps
Correct : D. ATP in small steps
88. Plant embryo develops from.
A. seed
B. Fruit
C. Zygote
D. Flower
Correct : C. Zygote
89. Embryo of flowering plant is always -
A. Haploid (n)
B. Diploid (2n)
C. Triploid (3n)
D. Tetraploid (4n)
Correct : B. Diploid (2n)
90. Plant embryo is a mass of -
A. cell
B. Uncertain tissue
C. Collection of plant tissues
D. Miniature plant
Correct : D. Miniature plant
91. Stamen is a modification of
A. Leaf
B. Microsporophyll
C. Megasporophyll
D. Shoot
Correct : B. Microsporophyll
92. Zygote is formed inside the
A. Stigma
B. Style
C. Female gametophyte
D. Seed
Correct : C. Female gametophyte
93. A microspore is a
A. Male gamate
B. First cell of male gametophyte
C. Last cell of male gametophyte
D. Diploid cell
Correct : B. First cell of male gametophyte
94. An anther consists of
A. one microsporangium
B. four microsporangia
C. Two microsporangia
D. many microsporangia
Correct : B. four microsporangia
95. Cells of nucellus are always
A. Haploid
B. Triploid
C. Diploid
D. Enucleated
Correct : C. Diploid
96. The embryo sac is produced from
A. Microscope
B. Zygote
C. Egg cell
D. Megaspore
Correct : D. Megaspore
97. An egg-apparatus contains
A. An egg + two antipodal
B. An egg + Secondary nucleus
C. An egg + Two synergids
D. Antipodal cell + synergid
Correct : C. An egg + Two synergids
98. In angiosperm the endosperm nucleus is
A. Triploid
B. Diploid
C. Tetraploid
D. Haploid
Correct : A. Triploid
99. Female gametophyte is also known as
A. ovule
B. egg-apparatus
C. Nucellus
D. Embryo sac
Correct : D. Embryo sac
100. Embryo sac contains
A. 3 egg
B. 2 eggs
C. 1 egg
D. 4 eggs
Correct : C. 1 egg