1. The cell reproduction in bacteria may occur by
(A). binary fission
(B). budding
(C). fragmentation
(D). all of these
Correct Answer: D
2. Ptyalin is inactivated by a component of gastric juice known as
(A). Pepsin
(B). Mucus
(C). Rennin
(D). HCl
Correct Answer: D
3. Placenta is the structure formed
(A). by the union of foetal and uterine tissue
(B). by foetus only
(C). by fusion of germ layers
(D). None of these
Correct Answer: A
4. The transport of acyl-CoA for oxidation using a shuttle involves formation of the intermediate
(A). 3 acetyl-CoA
(B). Acyl-coenzyme A
(C). acyl-carnitine
(D). None of these
Correct Answer: C
5. Man in the life cycle of Plasmodium is the
(A). secondary host
(B). primary host
(C). intermediate host
(D). none of these
Correct Answer: D
6. Cellular Totipotency was first demonstrated by
(A). F.C. Steward
(B). Robert Hooke
(C). T.Schwann
(D). A.V. Leeuwenhock
Correct Answer: A
7. Species of __________ are predominant on thawing vegetables like sweet corn and peas when the temperature of thawing is fairly low.
(A). Streptococcus
(B). Micrococcus
(C). both (a) and (b)
(D). none of these
Correct Answer: B
8. Which one of the following is a systemic insecticide ?
(A). Malathion
(B). Parathion
(C). Endrin
(D). Furadan
Correct Answer: D
9. Telephone was invented by
(A). J. L. Baird
(B). Alexander Graham Bell
(C). Marconi
(D). Albert Einstein
Correct Answer: D
10. Which one of the following is an enzyme ?
(A). Glucagon
(B). Insulin
(C). Somatotropin
(D). Trypsin
Correct Answer: D
11. A five carbon sugar lacking a hydrogen at the number 2 carbon is found in
(A). DNA
(B). RNA
(C). mRNA
(D). rDNA
Correct Answer: A
12. Which of these spores are characteristic of the black bread mold Rhizopus?
(A). Arthrospore and Ascospore
(B). Ascospore and Zygospore
(C). Arthrospore and Blastospore
(D). Sporangiospore and Zygospore
Correct Answer: D
13. Nitrogen fixation
(A).
| |
changes the free nitrogen (N2) to a form usable by plants |
(B). especially changes nitrogen compounds, mostly amines such as NH2
(C). both (a) and (b)
(D). fix the free nitrogen (N2) by which it should not be usable by plants
Correct Answer: C
14. N2 content is kept constant in the biosphere due to
(A). N2 fixation
(B). industrial pollution
(C). nitrogen cycle
(D). absorption of N2
Correct Answer: C
15. The method of distillation used to obtain alcohol greater than 95 percent is called
(A). fractional distillation
(B). flash evaporation
(C). azeotropic distillation
(D). successive distillation
Correct Answer: C
16. Which of the following conditions can be caused by Plesiomonas?
(A). Septicaemia
(B). Gastroenteritis
(C). Cellulites
(D). All of these
Correct Answer: D
17. Kupffer’s cells are
(A). Phagocytic
(B). Actin
(C). Myosin
(D). Fibrin
Correct Answer: A
18. Which of the following is related to humoral immunity?
(A). T-lymphocyte
(B). B-lymphocyte
(C). I-lymphocyte
(D). P-lymphocyte
Correct Answer: B
19. Autotrophs in an ecosystems are called
(A). Consumers
(B). Decomposers
(C). Producers
(D). Abiotic constituents
Correct Answer: C
20. Number of nitrogenous bases in a Codon is
(A). 3
(B). 2
(C). 1
(D). 5
Correct Answer: A
21. Which of the following have been used for cryo-preservation of germplasm with 90% tissue survival and 10%plant regeneration that are used in international exchange of germplasm?
(A). Meristem tip cultures
(B). Embryo cultures
(C). Both (a) and (b)
(D). Embryo cultures supplemented with GA3 and coconut milk
Correct Answer: A
22. Which of the following is properly matched?
(A). Echinodermata - Asteroidea - Star fish
(B). Arthropoda -Insecta -Spider
(C). Mollusca - Cephalopoda - Unio
(D). Platyhelminthes -Trematoda - Planaria
Correct Answer: A
23. A parenteral route of drug administration refers to
(A). oral
(B). nonoral
(C). intravenously
(D). intramuscularly
Correct Answer: B
24. Which of the following bacteria dies quickly after drying?
(A). Treponema pallidium
(B). Mycobacterium tuberculosis
(C). Staphylococcus aureus
(D). Pseudomonas aeruginosa
Correct Answer: A
25. Cytoplasmic inclusions include
(A). ribosomes
(B). mesosomes
(C). fat globules
(D). all of these
Correct Answer: D
26. In the equation, A = ε bc, what quantity is represented by "ε"?
(A). Absorbtivity
(B). Molar absorbtivity
(C). Path length
(D). None of these
Correct Answer: B
27. A person is suffering from frequent episodes of nasal discharge nasal congestion, reddening of eyes and watery eyes. These are the symptoms of
(A). Bronchitis
(B). Rhinitis
(C). Bronchial carcinoma
(D). Cyanosis
Correct Answer: B
28. Protein A is found in cell wall of
(A). coagulase-negative staphylococci
(B). Staphylococcus aureus
(C). Micrococci
(D). none of these
Correct Answer: B
29. Bacitracin, an antibiotic similar to penicillin, is produced by
(A). Bacillus polymyxa
(B). Streptomyces erythreus
(C). Bacillus licheniformis
(D). Aspergillus fumigatus
Correct Answer: C
30. Which one is not useful in the treatment of viruses except
(A). acyclovir
(B). interferon
(C). penicillin
(D). antibodies
Correct Answer: C
31. Which of the following viruses can be transmitted by the parenteral route?
(A). HBV
(B). HCV
(C). HDV
(D). All of these
Correct Answer: D
32. Fluorescence microscopy can be used for the diagnosis of
(A). Subacute sclerosing panencephalitis
(B). Herpes simplex encephalitis
(C). Rabies
(D). All of these
Correct Answer: D
33. The part of the brain where the centre for hunger and thirst is located is
(A). Cerebrum
(B). Hypothalamus
(C). Cerebellum
(D). Medulla Oblongata
Correct Answer: B
34. Blood pressure may be increased by the excessive secretion of
(A). Thyroxine
(B). Testosterone
(C). Estradiol
(D). Estrol
Correct Answer: C
35. Human serum albumin in case of transgenic plant is secreted in
(A). transgenic leaf tissues
(B). transgenic root tissues
(C). is not secreted out of plant
(D). transgenic stem tissues
Correct Answer: A
36. Attractive Vander Waals forces occur between
(A). apolar molecules in the liquid state
(B). any pair of nearby atoms
(C). polar molecules in the solid state
(D). only if other forces are less favorable
Correct Answer: B
37. Example of the pathogenic bacteria is/are
(A). L biflexa
(B). Lparva
(C). Leptospira interrogans
(D). All of these
Correct Answer: C
38. The types of ribosomes found in prokaryotic cell are ________.
(A). 100 S
(B). 80 S
(C). 60 S
(D). 70 S
Correct Answer: D
39. The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of
(A). Salmonella
(B). S. aureus
(C). C. botulinum
(D). all of these
Correct Answer: D
40. The smooth endoplasmic reticulum (SER) is the site of
(A). phospholipid synthesis
(B). amino acid synthesis
(C). carbohydrate synthesis
(D). protein synthesis
Correct Answer: A
41. Which of these hormones is a catecholamine?
(A). Follitropin
(B). Norepinephrine
(C). Tetraiodothyronine
(D). Tetrahydrofolate
Correct Answer: B
42. The mode of action of polymyxin is to
(A). inhibit protein synthesis
(B). inhibit DNA synthesis
(C). injury to the plasma membrane
(D). inhibit folic acid synthesis
Correct Answer: C
43. Which of the following can be used to detect clumping factor?
(A). tube coagulase test
(B). slide coagulase test
(C). precipitation test
(D). none of these
Correct Answer: B
44. Which of the antibiotic is not used as a food preservative ?
(A). Pimaricin
(B). Nisin
(C). Tylosin
(D). β-lactam antibiotic
Correct Answer: D
45. Northern blotting is
(A). widely different than southern blotting
(B). another name for southern blotting
(C). analogous to southern blotting
(D). none of the above
Correct Answer: C
46. Which of the following is the class of hybridization?
(A). Intervarietal
(B). Interspecific
(C). Intergeneric
(D). all of these
Correct Answer: D
47. The class of immunoglobulins which can cross the placenta is
(A). IgM
(B). IgG
(C). IgA
(D). IgD
Correct Answer: B
48. Name the following having oxygen storing capacity
(A). Myoglobin
(B). Prophase II
(C). Anaphase I
(D). Metaphase II
Correct Answer: A
49. Fungi in the division Deuteromycota are characterized by the fact that
(A). they only reproduce sexually
(B). they form sexual spores called deuterospores
(C). they are incapable of sexual reproduction
(D). a method of sexual reproduction has not been identified
Correct Answer: D
50. Which one of the following is NOT the function of insulin?
(A). Increase the oxidation of glucose in the cells.
(B). Increases the permeability of cell membrane to glucose.
(C). Initiates the formation of hepatic glycogen from excess of glucose.
(D). Initiates the conversion of glycogen to glucose.
Correct Answer: D
51. In Fluid mosaic model, the biological membrane can be viewed as
(A). two dimensional solutions of oriented lipids and globular proteins
(B). three dimensional solutions of oriented lipids and globular proteins
(C). two dimensional solutions of oriented lipids and carbohydrate
(D). three dimensional solutions of oriented lipids and carbohydrate
Correct Answer: A
52. A person of blood group AB can give blood to :
(A). A and B
(B). Only AB
(C). A,B and O
(D). All of these
Correct Answer: B
53.
Water activity can act as
(A). an intrinsic factor determining the likelihood of microbial proliferation
(B). a processing factor
(C). an extrinsic factor
(D). all of the above
Correct Answer: D
54. The species of Acetobacter which produces cellulosic strands to hold the cells in lime layer is
(A). Acetobacter curvum
(B). Accetobacter orleanense
(C). Acetobacter xylinum
(D). Acetobacter schuetzenbachii
Correct Answer: C
55. Which of the following is correct?
(A). A Winogradsky column is used to filter out microorganisms from a water sample taken from a deep black smoker
(B). A Winogradsky column is used to demonstrate interactions and gradients that occur in aquatic environments
(C). Both (a) and (b)
(D). A Winogradsky column is used to filter out microorganisms from non-aquatic environments
Correct Answer: B
56. The transducing particles carry only specific portions of the bacterial genome in which of the following transduction?
(A). Specialized transduction
(B). General transduction
(C). Abortive transduction
(D). None of these
Correct Answer: A
57. Heat-labile enterotoxin of Escherichia coli activates
(A). guanylate cyclase
(B). adenylate cyclase
(C). both (a) and (b)
(D). none of these
Correct Answer: B
58. Cell size and cell number can be measured using
(A). hemocytometer
(B). coulter counter
(C). petroff-hausser counting chamber
(D). none of these
Correct Answer: B
59. Both Mycobacterium tuberculosis and Streptococcus pneumoniae
(A). are acquired by inhalation
(B). have cell walls that contain a high content of mycolic acids
(C). have polysaccharide capsules
(D). stay in the lung and rarely, if ever, enter the bloodstream
Correct Answer: A
60. A mutualistic association made up of a fungus and a cyanobacterium is called
(A). a saprobe
(B). a gamete
(C). lichen
(D). dimorphic
Correct Answer: C
61. The transcription of the viral nucleic acid into mRNA is not necessary in case of
(A). RNA viruses
(B). ds DNA viruses
(C). ss DNA viruses
(D). all of these
Correct Answer: A
62. A RBC and a plant cell (with thick cell wall) are placed in distilled water. The solute concentration is the same in both the cells. What changes would be observed in them?
(A). The RBC would increase in size and burst while the plant cell would remain about the same size.
(B). The plant cell would increase in size and burst while the RBC would remain about the same size.
(C). Both plant cell and RBC would decrease in size and collapse.
(D). Both plant cell and RBC would not undergo any change.
Correct Answer: A
63. What can be coated to the plastic dish if an ELISA is performed to directly detect polio virus?
(A). Patient serum
(B). Anti-polio antibody
(C). Polio capsid protein
(D). Colored substrate
Correct Answer: B
64. Monocot root differs from dicot root in having
(A). open vascular bundles
(B). scattered vascular bundles
(C). well developed pith
(D). radially arranged vascular bundles
Correct Answer: C
65. Match the types of the fruits listed in Column I, with the examples listed on Column II. Choose the answer which gives the correct combination of alphabets of the two columns.
Column – I Column – II
A. Capsule p. Paddy
B. Berry q. Mango
C. Drupe r. Sunflower
D. Cypsela s. Tomato
t. Ladies finger
(A). A = t, B = s, C = q, D = r
(B). A = t, B = r, C = p, D = q
(C). A = s, B = t, C = q, D = r
(D). A = p, B = q, C = r, D = t
Correct Answer: A
66. Which one of the following is an exotic carp species?
(A). Barbus stigma
(B). Cyprinus carpio
(C). Labeo bata
(D). Cirrhinus mrigala
Correct Answer: B
67. Which of the following is the spike antigen of HIV-I?
(A). gp 120
(B). gp 140
(C). gp 36
(D). gp 41
Correct Answer: A
68. The secretary component of sIgA is
(A). made by plasma cells that secrete dimeric IgA
(B). added to dimeric IgA by the M cell
(C). formed by cleavage of an epithelial cell receptor used to transport the dimeric IgA across the epithelial cell
(D). made by T cells
Correct Answer: C
69. Cholera toxin is an A-B type toxin in which the B portions bind to a receptor on a host cell and the A portion enters the cell to cause
(A). ADP ribosylation of adenylate cyclase that stops production of cAMP
(B). ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP
(C). cleavage of rRNA that results in disruption of ribosome function
(D). ADP ribosylation of guanylate cyclase that stimulates production of cGMP
Correct Answer: B
70. Which of the following methods would be most appropriate for sterilizing an antibiotic solution?
(A). Dry heat sterilization
(B). Microfiltration
(C). Autoclaving
(D). Desiccation
Correct Answer: B
71. Culture of tubercle bacilli may be positive if number of bacteria in the specimen is
(A). as few as 1-4 per ml
(B). as few as 5-9 per ml
(C). as few as 10-100 per ml
(D). as few as 125-200 per ml
Correct Answer: C
72. Who developed the concept of specific toxicity?
(A). Pasteur
(B). Fleming
(C). Watson
(D). Ehrlich
Correct Answer: D
73. Non-competitive inhibitor of an enzyme catalyzed reaction
(A). decreases Vmax
(B). binds to Michaelis complex (ES)
(C). both (a) and (b)
(D). can actually increase reaction velocity in rare cases
Correct Answer: C
74. Yellow fever is transmitted by-
(A). Female Culex
(B). Female Anopheles
(C). Female Aedes
(D). Housefly
Correct Answer: C
75. Stoma opens when
(A). Guard cells swell by endosmosis due to influx of hydrogen ions (protons)
(B). Guard cells swell by endosmosis due to efflux of potassium ions.
(C). Guard cells swell due to a decrease in their water potential.
(D). Guard cells swell due to an increase in their Water potential.
Correct Answer: D
76. Structural lipids of cell membrane
(A). Simple lipid
(B). Chromolipids
(C). Steroid
(D). Phospholipids
Correct Answer: D
77. Virus reproduces in living cells by
(A). replication
(B). duplication
(C). multiplication
(D). all of these
Correct Answer: A
78. For the unfolding reaction of Protein G, ΔH° =210.6 kJ/mol, this means that
(A). unfolding is favored enthalpically
(B). folding is favored enthalpically
(C). the entropy is positive at all temperatures
(D). the entropy is negative at all temperatures
Correct Answer: B
79. Which of the following is not correct for hepatitis A virus?
(A). It can be grown in cell cultures of primate and human cells
(B). It is one of the most stable viruses infecting humans
(C). It may cause hepatocellular carcinoma
(D). None of the above
Correct Answer: C
80. Which of the following is true about β-ionone, non-ionic detergent used in β carotene fermentation medium?
(A). It is a precursor of β-carotene fermentation process
(B). It is regarded as "steering" factor associated with bringing about the presence and activity of the enzymes responsible for β-carotene formation
(C). It is an inducer of β carotene fermentation process
(D). None of the above
Correct Answer: B
81. Normal adult human male has
(A). 10 gram of haemoglobin/100 gram of blood
(B). 14 gram of haemoglobin/100 gram of blood
(C). 18 gram of haemoglobin/100 gram of blood
(D). 24 gram of haemoglobin/100 gram of blood
Correct Answer: B
82. The structural abnormality of cells is termed as
(A). hyperplasia
(B). anaplasia
(C). metastasis
(D). all of these
Correct Answer: B
83. A cockroach has how many pairs of walking legs?
(A). one
(B). two
(C). four
(D). three
Correct Answer: A
84. Which of following two hormones are essential for induced breeding of fishes?
(A). TSH and ACTH
(B). Oestrogen and progesterone
(C). FSH and LH
(D). Vassopressin and oxytocin
Correct Answer: C
85. B. flavum strain can be used for the production of
(A). L-Threonine
(B). L-Proline
(C). L-Isoleucine and L-Histidine
(D). All of the above
Correct Answer: D
86. Which of the following is correct sequence of processes in the oxidation of glucose?
(A). Krebs cycle - glycolysis - electron transport
(B). Glycolysis - Krebs cycle - eletron transport
(C). Electron transport - Krebs cycle - glycolysis
(D). Krebs cycle - electron transport - glycolysis
Correct Answer: B
87. Selenium is an essential component of the enzyme glutathione peroxidase which
(A). scavenges toxic hydoperoxycompounds in tissues
(B). reduces toxic hydoperoxycompounds in tissues
(C). oxidizes toxic hydoperoxycompounds in tissues
(D). none of the above
Correct Answer: A
88. The sulphite waste liquor fermentation employs use of Candida utilis because of its ability to ferment
(A). sucrose
(B). pentose
(C). glucose
(D). maltose
Correct Answer: B
89. VDRL test is an example of
(A). Tube test
(B). Ring test
(C). Slide test
(D). none of these
Correct Answer: C
90. Electric potential of the brain is recorded by
(A). .CT Scan
(B). .Sphygmomanometer
(C). .ECG
(D). .EEG
Correct Answer: D
91. The oxygen in hemoglobin and myoglobin is bound to
(A). the iron atom in the heme group
(B). the nitrogen atoms on the heme
(C). histidine residues in the protein
(D). lysine residues in the protein
Correct Answer: A
92. Denitrification is
(A). reduction of nitrate (NO3-) to nitrogen gas
(B). reduction of nitrate to organic nitrogen compounds
(C). both (a) and (b)
(D). changing of atmospheric nitrogen (N2) to nitrogen compounds
Correct Answer: D
93. When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called
(A). pentose phosphate pathway
(B). glycolyic pathway
(C). glyoxylate pathway
(D). oxaloacetate pathway
Correct Answer: C
94. The oxygen absorption rate can be determined by
(A). sodium sulfite oxidation method
(B). dynamic gassing out technique
(C). direct measurement
(D). all of these
Correct Answer: D
95. The Ramachandran Plot illustrates the fact that
(A). the peptide bond is planar
(B). the F & Y angles can assume any value in a peptide
(C). the F & Y angles can assume only a single value in a protein
(D). the F & Y angles can assume approximately three different values
Correct Answer: D
96. S. patorianns can cause
(A). cloudiness in beer
(B). ester like taste in beer
(C). stringent taste in beer
(D). bitter taste
Correct Answer: A
97. The affinity of an enzyme for its substrate, when the enzyme has a Km of 0.50 M will be __________ than the affinity of an enzyme for its substrate when the enzyme has a Km of 0.05 M.
(A). greater
(B). lesser
(C). approximately equal
(D). half
Correct Answer: B
98. In koji process for the fermentation to produce citric acid,
(A). A. niger is used with solid substrate as sweet potato
(B). A. niger floats on the surface of solution
(C). Fungal mycelium grows through out the solution in a deep tank
(D). both (a) and (b)
Correct Answer: A
99. Which one of the following is termed as the ‘power house’ of a cell?
(A). Golgi bodies
(B). Mitochondria
(C). Nucleus
(D). Chloroplast
Correct Answer: B
100. Radish is a
(A). bulb
(B). conn
(C). modified root
(D). tuber
Correct Answer: C