CUSAT CAT 2019 Question Paper Microbiology

(Microbiology)

019
2
S T
E
1. T
Protective mechanisms used by bacteria to survive in the host may be
N
O
(A) Capsules
SI
IS
(B) M protein
(C) various enzymes
M
D
M
(D) All of the above
A

N
2. O
Microbes which are capable of growing over a wide range of temperature are called
M

SAT
M
O
(A) Eubacteria
CO (B)
C T
Thermophilic
(C) Thermotolerant
(D) Eurythermal E
CU
3.

AT N 9
Carbohydrate binding proteins are called
1
(A)

S IO
Lectins
2 0
U
(B) Defensins

S T
(C) Lipopolysaccharides
S
C IS
(D) Peptidoglycans

T E
4. N
Spliceosomes are absent in cells of
O
(A)
MPlants
IS
S I
D
(B) Animals
(C) Fungi
M
(D) Bacteria
A
5. N
Bacteria that are resistant to penicillin and related antibiotics produce an enzyme that
O
breaks---------- in these antibiotics.
M
(A) Benzene ring M
(B)
(C)
Side groups (R groups)
beta-lactam ring C O
(D) Disulfide bonds
AT
S
CU

6. An antimicrobial agent that interferes with translation of mRNA into protein is

(A) Cephalosporin 019
(B) Chloramphenicol 2
(C) Mitomycin
S T
E
(D) Amphotericin B
T
N
O
7. I
Membrane bound organelles are absent in
S
IS
(A) Chlamydomonas
M
D
M
(B) Saccharomyces
A
(C) Streptococcus

N
(D) Plasmodium
O
M
8.

SA
T
O
M
Endotoxin

O
C (A) Lipoproteins
C T
(B) Peptidoglycan E
in Gram negative bacteria is made up of :

CU
T
(C) Lipopolysaccharide

N
(D) Polypeptide

9. A
S IO 2 0 19
Which of the following has coiled RNA and capsomeres?

(A)
(B)
(C)
(D)
U
C IS S
Poliovirus
Tobacco mosaic virus
Measles virus
Retrovirus T E ST
N
O
10.
M S I
In the laboratory, bacterial cells can be rendered …………….. by the use of cold calcium
IS
D
chloride or electroporation.
M
(A) Conjugated
(B)
A
Transposable
(C)
N
Competent
(D)
O
Transducible

M
11. What bacterial gene transfer process M
is most sensitive to extracellular nucleases?

(A) Generalized transductionC
O
(B) Specialized transduction
A T
(D) Transformation S
(C) Homologous recombination

CU

12. What is the peculiarity of Pandoravirus?

(A) Largest virus 019
(B) Largest viral genome 2
(C) Smallest virus
S T
E
(D) Smallest viral genome
T
N
O
13. I
The first antibody to contact invading micro-organism:
S
(A) IgG IS
M
D
M
(B) IgA
(C) IgD A

(D) N
IgM
O
M
14.

SA
T
O
M
O
C (A) Conidiospore
(B) Ascospore
C T E
Which of the following is a sexual spore of fungi?

CU
T
(C) Sporangiospore

N
(D) Clamydospore

15. A
S IO
Kojic acid is obtained from
2 0 19
(A)
(B)
(C)
(D)
U S
Nocardia

C IS
Micrococcus
Aspergillus
Penicillium T E ST
N
O
16.
M S I
Which of the following structure is absent in Gram positive bacteria?
IS
(A)
D Cell wall
M
(B) Teichoic acid
(C) Murein
A
(D)
N
Outer membrane

O
17. M
The only bacterial genus with sterols in their cell wall
M
(A)
(B)
Vibrio
Escherichia C O
(C)
(D)
Mycoplasma
Salmonella AT
S
CU

18. Magnetosomes are inclusions of ………….in certain bacteria

(A) Iron oxide 019
(B) Iron phosphate 2
(C) Iron chloride
S T
E
(D) Iron nitrate
T
N
O
19. I
Ehrilch and Hata discovered ------ that was used to treat ---------
S
IS
(A) salvarsan; syphilis
Msurgical wounds
D
M
(B) penicillin;
A malaria
(C) salvarsan;

N
(D) prontosil; malaria
O
M
20.

SA
T
O
M
C (A) Gelidium O
C T
(B) Polysiphonia E
Agar-agar is obtained from

CU
T
(C) Fucus

N
(D) Laminaria

21. A
S IO 2 0 19
Which of the algae is responsible for red colour of red sea?

(A)
(B)
(C)
(D)
U S
Chlamydomonas brauii

C IS
Trichodesmium erythrium
Ulothrix zonata
None of the above T E ST
N
O
22.
M S I
The resolving power of an optical microscope is :
IS
(A)
D 0.2 μm
M
(B) 0.2 mm
(C) 0.2 A°
A
(D) 0.2 nm
N
O
23. M
Presence of sodium taurocholate in McConkey agar make it a
M
(A)
(B)
Differential medium
Basal medium C O
(C)
(D)
Selective medium
Enriched mediumAT
S
CU

24. The third amino acid in the peptidoglycan crosslinking chain is either diaminopimelic

19
acid or lysine because this amino acid must
0
(A) Be positively charged for a salt2bridge to form.
(B) Be hydrophillic.
S T
(C) Have a free amino groupEfor peptide bond formation.

T to fill space in the cell wall.
(D) Have a large R-side chain
N
O
S I
25.
IS are most suitable indicators of SO pollution in the environment?
Which of the following 2

(A) Algae DM
(B) FungiA
M
N
(C) Lichens
(D) O
M Conifers

SA T
O
M
O
C T E
26. C A dikaryon is formed when

(A) Meiosis is arrested

CU
T
(B) The two haploid cells do not fuse immediately

A N
(C) Cytoplasm does not fuse
(D) None of the above
19
S IO 2 0
U S
27. Genes present on the same locus but having different expressions are

ST
C IS E
(A) Polygenes
(B) Multiple alleles
T
(C) Pleiotropic genes
N
(D) Co-dominant genes
O
M IS
S I
D
28. Chitin is
M
(A) Sulphur containing polysaccharide
(B)
A
Simple polysaccharide
(C)
N
Nitrogen containing polysaccharide
(D)
O
Phosphorous containing polysaccharide

M
29. M than C3 plants due to the
C4 plants are more efficient in photosynthesis
O
(A) Presence of large numberCof chloroplasts
(B) Higher leaf area
A T
(D) Presence of thin S
(C) Lower rate of photorespiration

C U cuticle

30. Sickle cell anemia shows

(A) Epistasis 019
(B) Incomplete dominance 2
(C) Pleiotropy
S T
E
(D) Co-dominance
T
N
O
31. I
The polymer of natural rubber is
S
IS
(A) all trans isoprene
(B) Buna-N M
D
M
Aisoprene
(C) all cis

N of the above
(D) None
O
M
32.

SA
T
O
M
C (A) Methane O
C T E
Main constituent of LPG is

(B) Iso-butane, propane

CU
T
(C) H2, CH4, Iso-butane

N
(D) None of the above

33. A
S IO 2 0 19
Which of the following enzymes is used to join two DNA molecules?

(A)
(B)
(C)
(D)
U
C IS S
Endonucleases
Restriction enzymes
Lyases
Ligases T E ST
N
O
34.
M S I
The Km value of an enzyme is
IS
(A)
D M
the total enzyme concentration

(B) the substrate concentration at half maximal velocity
(C)
A
half the substrate concentration at maximum velocity
(D)
N
dissociation constant of enzyme substrate complex

O
35. M
The enzymes that break hydrogen bonds and unwind are
M
(A)
(B)
primases
ligases C O
(C)
(D)
helicases
polymerases AT
S
CU

36. In prokaryotes

(A) 019
Transcription and translation are coupled
(B) 2
Transcription and processing are coupled
(C) T
Processing and translation are coupled
S
E
(D) Replication and transcription are coupled
T
N
O
37.
SI
The 21st aminoacid is
IS
(A) Hydroxyl proline
(B) HydroxylM
A
D lysine
(C) Selenocysteine
M
N
(D) Citrulline
O
M
38.

SA
T
O
M
Absorbance

O
C (A) all amino acids
C T E
at 280nm exhibited by proteins is due to

(B) aliphatic amino acids

CU
T
(C) polar amino acids

N
(D) aromatic amino acids

39. A
S IO 2 0 19
Proteins are separated on the basis of their net charge by

(A)
(B)
(C)
(D)
U
C IS S
affinity chromatography

T E
T
ion exchange chromatography
S
gel filteration chromatography
dialysis
N
O
40.
M S I
Bacterial capsules are generally viewed by
IS
(A)
D M
Ziehl-Neelsen staining

(B) Gram staining
(C)
A
Scanning electron microscopy
(D)
N
Negative staining

O
41. What is the refractive index of oil? M
M
(A)
(B)
1.5
1.0 C O
(C)
(D)
0.5
0.75 AT
S
CU

42. Approximate generation time of E.coli is

(A) 20 minutes 019
(B) 10 minutes 2
(C) 25 minutes
S T
E
(D) 30 minutes
T
N
O
43. I
The precursor used in the production of pencillin
S
(A) Phenol IS
M
D
M
(B) Phenyl acetic acid
(C) A
Pencilloic acid

(D) N
Biotin
O
M
44.

SA
T
O
M
C (A) Salmonella
(B) Bacillus
O
C T E
Which among the following is thermoduric Bacteria?

CU
T
(C) Pseudomonas

N
(D) Flavobacterium

45. A
S IO 2 0 19
Which among the following is not an air borne infection?

(A)
(B)
(C)
(D)
U
C IS S
Pertussis
Pneumonia
Diphtheria
Typhoid T E ST
N
O
46.
M S I
Wine production is favoured by
IS
(A)
D M
Pencillium chrysogenum

(B) Saccharomyces cerevisiae
(C)
A
Aspergillus niger
(D)
N
Bacillus subtilis

O
47. M
Which organism is coming under GRAS status?
M
(A)
(B)
E.coli
P.aeroginosa C O
(C)
(D)
L.lactis
B.subtilis AT
S
CU

48. The byproduct of streptomycin fermentation is

(A) Glutamic acid 019
(B) Ethanol 2
(C) Vitamin B12
S T
E
(D) Riboflavin
T
N
O
49. I
The typical temperature for an autoclaving is
S
(A) 121oC IS
M
D
M
(B) 100oC
(C) A
180oC

(D) N 160oC
O
M
M
O E
st
50. The 1 bacterial genome to be completely sequenced
O
C (A) Escherichia coli
SA
T
C T
(B) Haemophilus influenzae

CU
T
(C) Bacillus subtilis

N
(D) Mycobacterium tuberculosis

51. A
S IO
Mendel’s experimental organism was
2 0 19
(A)
(B)
(C)
(D)
U
C IS S
Caenorabditis elegans
Neurospora crassa

T E ST
Drosophila melanogaster
Pisum sativum
N
O
52.
M S I
The site of action of Chloramphenicol is
IS
(A)
D M
30S ribosome

(B) 50S ribosome
(C)
A
Nucleic acid
(D)
N
Cell wall

O
53. Enzyme used for fruit juice clarification M
M
(A)
(B)
Amylase
Protease C O
(C)
(D)
Pectinase
Lipase AT
S
CU

54. Calcium is not directly involved in

(A) Blood clotting 019
(B) Cell signaling 2
(C) Muscle contraction
S T
E
(D) Electron transport chain
T
N
O
55. I
Which one of the following organisms is used for the large scale production of
S
recombinant insulin?
IS
M
(A)
(B)
D
M
P.pastoris
A
A.tumefaciens

(C) N B.subtilis
(D) O E.coli
M

S
56.
AT
M
factors
O E
COA strain of micro-organism which lacks the ability to synthesize one or more growth
C T
CU (A)
(B)
(C)
AT
Autotrophs

N
Heterotrophs
Lithotrophs
19
S IO 0
(D) Auxotroph
2
57.
U S ST
Which of the following is a DNA virus?

(A)
C IS Adeno virus
T E
(B) Picorna virus
N
O
M
(C) Myxovirus
(D) Corona virus
S I
IS
58.
D M
Immunodiffusion in gel is a type of

(A)
(B)
(C)
A O
N
A
D
Precipitation reaction
Agglutination reaction
Complement fixation reaction
(D) None of the above
M
M
59.
C O
Which of the following is not a part of downstream processing?

(A) Filtration
A T
(B) Centrifugation
S
(C) Drying
C U
(D) Secondary screening

60. An example for an anaerobic fermentation

(A) Citric acid production 019
(B) Amino acid production 2
(C) Acetone butanol fermentation
S T
E
(D) Amylase production
T
N
O
61. I
Which among the following is a Type II restriction endonuclease?
S
(A) EcoP1 IS
M
D
M
(B) EcoR1
(C) EcoB A

(D) N
EcoK
O
M
62.

SA
T
O
M
O
C (A) Natural selection
C T E
Lamarck theory of organic evolution is usually known as

(B) Inheritance of Acquired characters

CU
T
(C) Genetic drift

N
(D) Continuity of germ plasm

63. A
S IO 2 0 19
A segment of DNA that reads the same forward and backward is called

(A)
(B)
(C)
(D)
U
C IS S
Palindromic DNA
Complementary DNA
Tandem DNA
Microsatellite DNA T E ST
N
O
64.
M S I
In a plant red colour (R) is dominant over white (r). A cross was made between a red
IS
D
flowered plant and a white flowered plant. The offspring were 50% red and 50 % white.
M
What is the possible genotype of the red colored plant?

A
(A)
(B)
(C)
RR
Rr
rr
O
N
A
D
(D) None of the above
M
M
C O
AT
S
CU

65. In H1N1, H and N represent

(A) Hemolysin and Neuraminase 019
(B) Hemagglutinin and Neuraminase 2
(C) Hemolysin and Neuraminidase
S T
E
(D) Hemagglutinin and Neuraminidase
T
N
O
66. BCG is an example for
S I
IS vaccine
(A) Live attenuated
M
D
M
(B) Killed vaccine
A
(C) Recombinant vaccine

N vaccine
(D) Subunit
O
M
67.

SA
T
O
M
O E
Antibiotic sensitivity of a clinical isolate is tested by the
C (A) Thayer-Martin method
C T
(B) Kirby-Bauer method

CU
T
(C) ONPG test

N
(D) Vogues-Proskauer test

68. A
S IO
Width of DNA double helix is
2 0 19
(A)
(B)
(C)
(D)
U34A°

C IS
20A°
10A°S
3.4A° T E ST
N
O
69.
M S I
3’ Terminal end of m-RNA has a polymer of adenylate which is known as
IS
(A)
D Capping
M
(B) Polyadenylate
(C)
A
Poly (A) tail
(D)
N
None of the above
O
70. Tm is greater for DNA with M
M
(A)
(B)
Higher GC content
Higher GA content C O
(C) T
Higher AT content
A
(D)
S
Higher AC content

CU

71. The causative agent of Bubonic plague

(A) Pasturella multocida 019
(B) Yersinia pestis 2
(C) Yersinia enterocolitica
S T
E
(D) Yersinia pseudotuberculosis
T
N
O
72. I
The etiological agent of common conjunctivitis/ pink eye
S
(A) Pseudomonas IS aeruginosa
(B) KlebsellaM
A
(C) Haemophilus
M
D pneumoniae
aegyptius

N
(D) Staphylococcus aureus
O
M
73.

SA
T
O
M
O
C (A) Magnification
C T
(B) Resolution E
The ability to reveal closely adjacent points as separate and distinct

CU
T
(C) Numerical aperture

N
(D) None of the above

74. A
S IO 2 0 19
The site where RNA polymerase attaches to the DNA molecule to start the formation of

U S
RNA is called

ST
C IS E
(A) Promoter
(B) Exon
T
(C) Intron
N
(D) GC hairpin
O
M IS
S I
D
75. Which of the following vectors can carry the largest insert?
M
(A) Plasmids
(B) Phagemids
A
(C) YACs
N
(D)
O
Cosmids

M
76. Ultraviolet radiation causes M
(A) Protein denaturation C O
T
(B) Rupturing of cell membrane
A
S
(C) Dimerization of Thymine

U
(D) Frameshift mutation
C

77. In which format are sequences submitted in BLAST server?

(A) FASTA 019
(B) ASN.1 2
(C) MmCIF
S T
E
(D) PDB file format
T
N
O
78. I
Transposons are discovered by
S
ISCo.
(A) F. Griffith &
M Crick
D
M
(B) Watson and
A
(C) B.MacClintok

(D) F.NMeicher
O
M
79.

SA
T
OIn
C (A) S
(B) G1
O
Ma cell cycle DNA replication occurs at --------------phase

C T E
CU
T
(C) G2

N
(D) G0

80. A
S IO 2 0 19
The most effective way to analyze variation at the whole genome level is to use

(A)
(B)
(C)
(D)
U S
Structural DNA
Segmental duplication
T E
Site directed mutagenesis
T
Single nucleotide polymorphism (SNP)

C IS
S
N
O
81.
M S I
Which of the following is a gaseous sterilizing agent?
IS
(A)
D Ethanol
M
(B) Formaldehyde
(C)
A
Glutardehyde
(D)
N
Ethylene oxide

O
M
M
C O
AT
S
CU

82. Match the following:

Organism 0 19 General Name
I. Hyalonema - 2 Freshwater sponge
(A)
II. Euplectella - S T (B) Boring sponge
E
III. Cliona
T- (C) Glass rope sponge
IV. Spongilla N - (D) Venus flower basket
O
S I
IS IV-A
(A) I-D, II-C, III-B,
(B) I-B, II-D,M
D III-A,
M
IV-C
(C) I-C, A
II-D, III-B, IV-A

N II-A, III-D, IV-C
(D) I-D,
O
M
83.

SA
T
O
Choose

O
M the correct order:
E
C (A) Sporocyst, Miracidium, Redia, Metacercaria, Cercaria
C T
(B) Miracidium, Redia, Sporocyst, Metacercaria, Cercaria

CU
T
(C) Miracidium, Sporocyst, Redia, Cercaria, Metacercaria

N
(D) Cercaria, Metacercaria, Miracidium, Sporocyst, Redia

84. A
S IO 0 19
Assertion (A): In Taenia solium, energy is liberated by breaking glycogen into CO2 and
2
U
fatty acids.

(A)
(B) C IS S N
T E ST
Reason (R): Aerobic respiration occurs in Taenia solium.

Both A and R are correct and R is the correct explanation for A
A is correct but R is incorrect
O
M I
(C) A is incorrect but R is correct
(D) S
Both A and R are incorrect and R is not the correct explanation for A
IS
D M
85. Which of the following is viviparous?

(A) Ascaris A
(B) N
Trichinella
(C) O
Enterobius
(D) Ancyclostoma M
M
C O
86. AT
I am an air-breathing arthropod with thin cuticle, a single pair of antennae, a single pair
S
U
of jaws and numerous pairs of hollow stumpy legs. Who am I?

C

(A) Centipede

19
(B) Millipede
(C)
(D)
Spider
Peripattus 20
S T
E
87. Match the following T
N
O
Organ part
SI Parts formed
I.
IS
Cornegeal layer - (A) Rods and cones
M
M
II. Vitrellae - (B) Corneal lens
III. D Retinula - (C) Refractive rod
A

N
IV. Rhabdome - (D) Crystalline cone
O
M
(A) I-D, II-C, III-B, IV-A
M
O
(B) I-B, II-D, III-A, IV-C

SAT
CO (C)
E
I-C, II-A, III-D, IV-B

C T
(D) I-D, II-C, III-D, IV-A

CU 88.
T N
Say True or False:

A 19
S IO
(A) In cockroach, the ommatidium produces small pieces of images called ‘mosaic
image’.
2 0
(B)

(A)
U
C IS S
‘superposition image’.

Both A and B are True T E
T
In bright light the ommatidium forms ‘apposition image’ and in dim light it forms
S
(B) N
A is True and B is False
O
M I
(C) A is False and B is True
(D) S
Both A and B are False
IS
D M
89. Ampullae of Lorenzini helps in___________.

(A) A
Olfactory function
(B) N
Equilibrium and auditory function
(C) O
Detection of slow vibrations in water
(D) Detection of water temperature M
M
90. The dental formula of rabbit is C
O
(A) I = 2/2, C = 1/1, PmA T
= 2/2, M = 3/3
(B) I = 2/3, C = 0/1, S
Pm = 3/3, M = 3/3
U
C Pm = 3/2, M = 3/2
(C) I = 2/1, C = 0/0,

(D) I = 1/1, C = 0/0, Pm = 0/0, M = 3/3

019
91. 2
The embedding medium not used for embedding tissues for electron microscopy is
S T
TE
(A) Paraffin
(B) Vestoplaw
(C) Araldite N
O
(D) Maraglas
SI
IS
M have smooth endoplasmic reticulum problem, because they are not
D
M
92. The Bedouin women
Aenough of this vitamin.
able to make

N
(A) O Vitamin B
M
O
(B) Vitamin D
M
O
E
(C) Vitamin E
C (D) Vitamin K
SA
T
C T
CU
T
93. ‘Pompe’s Disease’, an inborn disease is caused by the malfunctioning of

(A) ER

A N 19
S IO
(B) Ribosomes
(C) Lysosomes
2 0
U S
(D) Golgi complex

ST
94.
C IS T E
The microtubule is made up of ______ number of protein protofilaments called tubulin.

(A) 11
O
N
M I
(B) 13
S
IS
(C) 15

D
(D) 17
M
95.

(A)
(B)
A O
N
Integrins
Selectins
A
D
Calcium dependent cell adhesion is mediated by this glycoprotein.

(C) Glycines M
(D) Cadherins M
C O
AT
S
CU

96. This gene is called as ‘The Guardian of the Genome’.

(A) Rb 019
(B) p53 2
(C) PTEN
S T
E
(D) APC
T
N
O
97. I
In Mirablilis jalapa the F2 generation has same phenotype and genotype ratios, which
S
shows
IS
M
(A)
(B)
D
M
Complete dominance
A
Codominance

(C) N
Incomplete dominance
(D) O
Pleiotrophism
M

S
98.
AT
M

(A) nX-1
O E
COAccording to Lyon hypothesis, the number of Barr bodies was always
C T
CU
T
(B) nX+1

A N
(C) nX-2
(D) nX+2
19
S IO 2 0
U S
99. (A) In the blind spot, both rods and cones are present.

ST
C IS E
(R) Image formation does not take place at blind spot.

(A) T
Both A and R is correct
(B) N
A is correct, but R is not correct
O
M I
(C) A is not correct, but R is correct
S
IS
(D) Both A and R is not correct

D M
100. Which hormone stops the acid secretion of the gastric gland?
A
(A) Gastrin
N
(B)
(C) O
Secretin
Enterocrinin
(D) Entero-gastrone M
M
C O
AT
S
CU

101. The inward rolling of cells through the dorsal lip during gastrulation of frog is called

(A) Involution 019
(B) Invagination 2
(C) Epiboly
S T
E
(D) Delamination
T
N
O
102. I
The budding of a new and very different daughter species from a semi-isolated peripheral
S
IS
population of the ancestral species in a cross fertilizing organism is called as
M
(A)
(B)
D
M
Instantaneous speciation
A
Gradual speciation

(C) N
Quantum speciation
(D) O
Sympatric speciation
M

S
103.
AT
M

(A)
O
Chlorella E
COAn algae rich in proteins is
C T
CU
T
(B) Oscillatoria

A N
(C) Ulothrix
(D) Spirogyra
19
S IO 2 0
U S
104. The loading of phloem during translocation means

ST
C IS E
(A) elongation of phloem cells
(B)
T
separation of phloem parenchyma
(C)
N
strengthening of phloem fibers
(D)
O
pouring of sugars into phloem

M IS
S I
D
105. First stable product of photosynthesis by C3 plants during dark reaction is
M
(A) PGA
(B)
A
Pyruvic acid
(C) RuBP
N
(D)
O
Oxalo acetic acid

M
M
C O
AT
S
CU

106. Phytohormone causing abscission of leaves, senescence, bud dormancy and inhibition of
cell division is
019
(A) IAA 2
(B) ethylene
S T
E
(C) cytokinins
(D) ABA T
N
O
S I
IS is
107. Main function of lenticels
M
D
(A) transpiration
A
(B) guttation
M
N
(C) bleeding
(D) O
M gaseous exchange

SA T
O
M
O
C T E
108.C Pomato is somatic hybrid between

(A) poppy and potato

CU
T
(B) potato and tomato

A N
(C) poppy and tamarind
(D) poppy and tomato
19
S IO 2 0
U S
109. Which of the following is used to determine the rate of transpiration in plants?

ST
C IS E
(A) Porometer/hygrometer
(B) Potometers
T
(C) Auxanometer
N
(D)
O
Tensiometer/barometer

M IS
S I
D
110. During the dark reactions of photosynthesis
M
(A) Water splits
(B)
A
CO2 is reduced to organic compounds
(C)
N
Chlorophyll is activated
(D)
O
C6-Sugar is broken into three carbon sugars

M
M vascular plant?
111. Which of the following is the most primitive

(A) ferns C O
(B) cycas
A T
(C) sphagnum
S
(D) psilotum
C U

112. Which division of fungi lack flagella?

(A) Mastigomycota 019
(B) Amastgomycota 2
(C) Gymnomycota
S T
E
(D) Basidiomycetes
T
N
O
113. I
Fruiting bodies of slime moulds are called
S
(A) acervulus I
S
M
D
M
(B) sori
A
(C) apothecium

N
(D) perithecium
O
M
114. Cork

SA
T
O
O
M cambium and vascular cambium are
E
C (A) parts of secondary xylem and phloem
C T
(B) parts of percycle

CU
T
(C) lateral meristem

N
(D) apical meristem

115. A
S IO 2 0 19
A bicollateral vascular bundle is characterized by

(A)
(B)
(C)
(D)
U
C IS S T
phloem being sandwiched between xylem
S
transverse splitting of vascular bundle

T E
longitudinal splitting of vascular bundle
xylem being sandwiched between phloem
N
O
116.
M S I
What will be left if chlorophyll is burnt?
IS
(A)
D Magnesium
M
(B) Manganese
(C) Iron
A
(D) Sulphur
N
O
117. M
Elements needed for chlorophyll formation in plants are
M
(A) Sodium and copper
(B) Calcium and potassium C
O
(C) Iron and magnesium T
(D) Iron and calcium A
S
C U

118. What is meant by ‘Organ culture’?

019
(A) Maintenance alive of a whole organ, after removal from the organism by partial
immersion in a nutrient fluid 2
T
(B) Introduction of a new organ in an animal body with a view to create genetic
S
E
mutation in the progenies of that animal
T
(C) Cultivation of organs in a laboratory through the synthesis of tissues
N
(D) The aspects of culture in community which are mainly dedicated by the need of a
O
I
specified organ of the human body
S
IS
M
119. D
M
In addition to seeds, which of the following characteristics are unique to the seed-
A
producing plants?

N
O
(A) sporopollenin
(B)M lignin present in cell walls

A T
S 120.
M
(C) pollen
O
CO (D) megaphylls
C T E
CU
(A)

AT
White rust of crucifer is caused by

N
Puccinia
19
S IO 0
(B) Ustilago
(C) Cystopus
2
U S
(D) Peziza
ST
121.
C IS T E
When F1 plants heterozygous for tallness are selfed, F2 generation has both tall and dwarf
N
plants. This depicts the principle of
O
(A)
(B)
MDwarfness

IS
S I
Law of segregation
(C)
(D)
D Law of independent assortment
M
Blended inheritance

122. A N
A
D
If the trait is X-linked recessive, which of the following statements is true?
O
(A)
M
Children will not have the trait
(B)
M
Children might or might not have the trait
(C)
(D)
C O
All of the children will have the trait
Males will have the trait, but females will only have the trait if their father also has
the trait
AT
S
CU

123. Polyribosomes are aggregates of

(A) ribosomes and r-RNA 019
(B) only r-RNA 2
(C) peroxisomes
S T
E
(D) several ribosomes held together by string of m-RNA
T
N
O
124. I
In -helix secondary structure, hydrogen bonds lie between amide group of one amino
S
IS
acid and carbonyl group of
M
(A)
(B) A
D
M
2nd amino acid
3rd amino acid

(C) N
fourth amino acid
(D) O
fifth amino acid
M

S
125.
AT
M

(A)
O E
CONucleotide arrangement in DNA can be seen by
C T
X-ray crystallography

CU
T
(B) Electron microscopy

A N
(C) Confocal microscopy
(D) Light microscopy
19
S IO 2 0
U S
126. Initiation condon of protein synthesis (in eukaryotes) is

ST
C IS E
(A) GUA
(B) GCA
T
(C) CCA
N
(D) AUG
O
M IS
S I
D
127. If the DNA condons are ATG ATG ATG and a cytosine base is inserted at the beginning,
M
then which of the following will result

A
(A)
(B)
(C)
O
N
A
D
CAT GAT GAT G
a non-sense mutation
C ATG ATG ATG
(D) CATGATGATG
M
M
C O
AT
S
CU

128. The ’ subunit of polymerase has a function of

(A) Promoter binding 019
(B) Elongation 2
(C) Cation binding
S T
E
(D) Termination
T
N
O
129. I
Northern blotting is performed for
S
S
(A) DeterminingI the size of DNA
M the size of RNA
D
M
(B) Determining
A
(C) Quantification of RNA

N
(D) Sequencing of RNA
O
M

SA
M
O E
130. What is the function of polynucleotide kinase?
CO (A) Addition of  - phosphate at 3’ – OH
C T
T (B) Addition of  - phosphate at 5’ – OH
CU
T
(C) Removal of  - phosphate at 3’ – OH

N
(D) Removal of  - phosphate at 5’ – OH

131. A
S IO 2 0 19
At how many places, reduced coenzymes are produced in TCA cycle?

(A)
(B)
(C)
(D)
U
C IS
Two

S
Three
Four
Five T E ST
N
O
132.
M S I
What is the byproduct of bacterial photosynthesis?
IS
(A)
D O2
M
(B) H2O
(C) S
A
(D) H2S
N
O
133. M
During electrophoresis denaturation of the double stranded DNA is brought about by
M
(A) Treatment with alkali
(B) Application of current C
O
(C) Treatment with EtBr T
(D) Application of heatA
S
C U

134. The inheritance pattern of RAPD is

(A) Dominant 019
(B) Recessive 2
(C) Codominant
S T
E
(D) Random
T
N
O
135. I
After entering a T cell, HIV first forms
S
(A) mRNA IS
M
D
M
(B) ssDNA
(C) dsDNAA

(D) N
dsRNA
O
M

SA T
M

(A) NAD
O
C T
+ E
136. Which of the following compounds is responsible for coordinated regulation of glucose
COand glycogen metabolism?

CU
T
(B) Fructose 2, 6 bisphosphate

A N
(C) Acetyl-CoA
(D) Fructose 1, 6 bisphosphate
19
S IO 2 0
U S
137. An amino acid that has a secondary amine and disrupts  helix formation is

ST
C IS E
(A) Glycine
(B) Phenylalanine
T
(C) Serine
N
(D) Proline
O
M IS
S I
D
138. Pyramid of numbers deals with the number of
M
(A) Species in an area
(B)
A
Sub species in a community
(C)
N
Individuals in a community
(D)
O
Individuals in a tropical level

M
139. Food chain in which micro-organismsMbreakdown the food formed by primary producers

(A) Parasitic food chain C O
(B) Consumer food chainT
(C) Detritus food chainA
S
U
(D) Predator food chain
C

140. Which national park is not present in Assam?

(A) Kaziranga 019
(B) Nameri 2
(C) Namdhapa
S T
E
(D) Dibru-Saikhawa
T
N
O
141. I
Which of the following is not a primary contributor to the greenhouse effect?
S
IS
(A) carbon dioxide
M
D
M
(B) carbon monoxide
A
(C) chlorofluorocarbons

N gas
(D) methane
O
M
142. The

SA
T
O
O
M following disease is caused by nonsense mutation
C (A) Beta thalassemia
(B) Autism
C T E
CU
T
(C) Albinism

N
(D) Marfan syndrome

143. A
S IO 2 0 19
The reversion of the phenotypic effects of an already existing mutation is by

(A)
(B)
(C)
(D)
U
C IS S
Point mutation
Somatic mutation
Germline mutation
Suppressor mutation T E ST
N
O
144.
M S I
In ABO blood type, Type AB is produced by
IS
(A)
D M
Homozygous genotype

(B) Homozygous and Heterozygous genotype
(C)
A
Heterozygous genotype
(D)
N
None of the above

O
145. M
In mutational event, when adenine is replaced by guanine, it is a case of
M
(A)
(B)
Transition
Frameshift mutation C O
(C)
(D)
Transcription
Transversion AT
S
CU

146. Citric acid is a useful component of a buffer mixture because

(A) it has one pKa value 019
(B) it has two pKa values 2
(C) it has four pKa values
S T
E
(D) it has three pKa values
T
N
O
147. I
Which of the vector was mostly used in Human Genome project?
S
(A) Lamda phage ISand M13 vectors
(B) PhagemidMand shuttle vectors
D
M
A and Cosmid
(C) Plasmid

N and YAC
(D) BAC
O
M

SA
M
O E
148. Which of the following amino acids have an abundance of Histones?
CO (A) Arginine and Glutamine
C T
T (B) Alanine and Glutamine
CU
T
(C) Glycine and Glutamine

N
(D) Lysine and Arginine

149. A
S IO 2 0 19
In Lineweaver-Burk plot, the Y-intercept represents

(A)
(B)
(C)
(D)
U
C IS
Km
S
Vmax

1/Vmax
1/Km T E ST
N
O
150.
M S I
Viable material of endangered species can be preserved by
IS
(A)
D Gene Bank
M
(B) Gene Library
(C) Gene Pool
A
(D)
N
Herbarium

O
M
********************
M
C O
AT
S
CU

MICROBIOLOGY 9 - ANSWER KEY
1
20 CODE: 623
TEST
QN. NO. KEY QN. NO. KEY QN. NO. T KEY QN. NO. KEY QN. NO. KEY
E S

1 A 26 B 51 T D 76 C 101 A
2 D 27 B N
O52 B 77 A 102 C

I
3 A 28 C
ISS 53 C 78 C 103 A
4 D 29 C M 54 D 79 A 104 D
5 C 30 B AD
M
55 D 80 A 105 A

6 B 31 N
OCB 56 D 81 D 106 D
7 C 32 M 57 A 82 C 107 D
8
9
10
C
B
C
33
34 T C
SA
35
O
M D
B
C
O
C TE
59
60
58
D
C
A
84
85
83
B
B
C 108
109
110
B
B
B
11
12
D
B
U
C 36
37
A
C
AT N
61
62
B
B
86
87
1
D
9
B
111
112
D
A
13 D 38 D
S I O63 A 88
2 0 A 113 B

U S
14 B 39 A 64 B 89 D 114 C
15 C 40 D 65 D ST
90 C 115 D
16
17
D
C
41
42 C IS
A
A
66
67
A
B
O
N
T E 91
92
A
B
116
117
A
C
18 A 43 B
M 68
IS
B
S I 93 C 118 A

D
19 A 44 B 69 C 94 B 119 C
20 A 45 D 70 M A 95 D 120 B
21
22
23
B
A
C
46
47
48
A B
C
C
71
72
O
73
N
A
D B
C
B
96
97
98
B
C
A
121
122
123
B
D
D
M
24 C 49 A 74
MA 99 C 124 C

CO
25 C 50 B 75 C 100 D 125 A

AT
S
CU

019
2
QN. NO. KEY
S T
TE
126 D
127 A N
O
128 C SI
129 C IS
M
130 B A
D
M
131 B N
O
132 C M
133
134
135
A
A
C SA
T
CO
M
O
C TE
136
137
D
C
CU
AT N 19
138 D
S I O 2 0
U S
139 D
140 C ST
141
142
B
A C IS O
N
T E
143 D
M IS
S I
D
144 C
145 A M
146
147
148
D
D
D
A O
N
A
D

M
149 C
M
CO
150 A

AT
S
CU