1. One of the following group of animal shows viviparity

Annelids

Arachinids

Echinoderms

Molluscs

2. Which of the following is caused by trinucleotide repeat expansion?

Cystic fibrosis

Duchenne muscular dystrophy

Huntington's disease

Down's syndrome

3. One of the following is a living fossil

Dalbergia sissoo

Pinus longifolia

Mirabilisjalapa

Ginko bioloba

4. Which of the following best explains the process of evolution?

Natural selection

Horizontal gene transfer

Comparative genomics

Darwinism

5. A novel pentose present in the heart muscle

Xylulose

Lyxose

Arabinose

Xylose

6. The male sex hormone testosterone is secreted by

Crypt cells

Sertoli cells

Leydig cells

Liberkiihn cells

7. Which of the following is not an electrophile?

NH3

Br+

AICb

N02+

8. In a given population, lout of every 400 people has a genetic disorder caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which one of the following is the expected proportion of individuals who arc carriers of b allele but are not expected to develop the disorder

380/400

19/400

20/400

38/400

9. The main atmospheric layer near the surface of earth is called

Trophosphere

Mesosphere

Ionosphere

Stratosphere

10. The thermal decomposition of alkanes in the absence of air is called

Combustion

Oxidation

Cracking

Hydrogenation

11. Mannose 6-phosphate-dependent pathway for routing lysosomal enzymes can be blocked by

Tunicamycin

Colchicine

Vinblastin

Phalloidin

12. Trophic levels are formed by

Only plants

Only animals

Only bacteria

Organisms linked in food chain

13. Genetic variations can be introduced in bacteria by all the methods except

Transduction

Transformation

Mutation

DNA replication

14. The first drug produced by using rDNA technology is

Streptokinase

Tissue plasminogen activator

Insulin

Penicillin

15. Which of the following is a planar molecule?

Formaldehyde

Acetone

Formic acid

Acetic acid

16. Localization of mRNA in cells can be done using

In situ hybridisation

Dot blot hybridisation

Immunofluoescence assay

Northern hybridisation

17. Inheritance of skin color in humans is an example of

Mendelian inheritance

Monogenic inheritance

Polygenic inheritance

Complementary genes

18. Golden rice is a transgenic crop with an improved trait of

Insect resistance

High vitamin A content

High protein content

High lysine content

19. Which of the following statements is false about enantiomers?

Rotate plane polarised light

Are superimposable mirror images

Are nonsuperimposable mirror images

Have the same melting point

20. The one horned rhoniceros is specific to the following sanctuary

Bandipur

Kaziranga

Corbette park

Bharatpur

21. Conjugate base of H02-is

02-

H2O2

022­

O2+

22. A species is defined as endemic if they are

Rare

Localised to specific region

Cosmopolitan in distribution

Are critically endangered

23. Ratio of radius of atom to that of nucleus is of the order of

10^-10

10^-15

10^5



24. A disease which is not caused by fungi­

Pertusis

Dermatitis

Mycosis

Candidiasis

25. Pluripotent embryonic stem cells are derived from one of the following stages during embryonic development

Zygote

Morula

Blastula

Gastrula

26. Interferons (IFNs) are

Antibacterial proteins

Antiviral proteins

Bacteriostatic proteins

Antifungal proteins

27. Which of the following structure is absent in Gram-positive bacteria'!

Cell wall

Outer membrane

Lipoteichoic acid

Peptidoglycan

28. The molar volume of Helium is 8.21L at

400°C, 4 atm

127°C, 4 atm

27°C, 0.25 atm

127°C, 2 atm

29. If the molar amount of G in a DNA sample is then the molar amount of T would be

20%

30%

60%

80%

30. The contrasting pairs of factors in Mendelian crosses are called as

Alloloci

Multiple alleles

Allelomorphs

Paramorphs

31. A color blind female is often rare because she will be born only when

Her mother and maternal

Her father and maternal grandfather grandfather are color blind are color blind

Her father has normal vision and

Her parents have normal vision but mother is color blind grand parents are color blind

32. Hematopoietic stem cells are considered as

Totipotent

Multipotent

Pluripotent

Precursor

33. Which has maximum equilibrium molarity of sodium ion in O.1M aqueous solution (assume 100% ionisation)?

Sodium oxalate

Sodium orthophosphate

Sodium metaphosphate

Sodium bicarbonate

34. The light yellowish color of cow's milk is due to presence of

Carotene

Curcumin

Riboflavin

Bilirubin

35. Deep sea fishes are

Ectothennic homeotherms

Endothennic homeotherms

Ectothermic and heterotherms

Endothennic heterotherms

36. A genetically engineered microorganism widely used in bioremediation of oil spills is

Trichoderma

Bacillus

Pseudomonas

Xanthomonas

37. Myriapods consists of

Centipedes and millipedes

Crayfishes and crabs

Shrimps and lobsters

Spiders and scorpions

38. Alkenes are most soluble in one of the following solvents

Water

Ethyl alcohol

Ammonia

Carbon tetrachloride

39. A relationship between two species in which the individuals of one species adversely affects the other while itself remaining unaffected is known as

Commensalism

Amensalism

Mutalism

Parasitism

40. Which of the following is not required for

DNA polymerase

Dideoxy-dNTPs (ddNTPs)

Primers

Template DNA

41. The percentage of human loci that are heterozygous





37%

55%

42. One of the following is the Brewer's yeast

Saccharomyces ludwigi

Saccharomyces cerevisiae

Saccharomyces boulardii

Saccharomyces pastorianus

43. Fats and oils are

Monoesters of glycerol

Diesters of glycerol

Triesters of glycerol

Diesters of glycol

44. In one of the following orders of insects, the hind pair of wing is modified into halteres

Lepidoptera

Orthoptera

Hemiptera

Diptera

45. All individuals of a species inhabiting a given area is called as

Biome

Population

Ecosystem

Community

46. Which is not amphoteric?

HS04-

H2PO2-

H20

NH3

47. Fine organic or inorganic particles suspended in air is known as

Aerosol

Gaseous pollutant

Particulate pollutant

Smog

48. Ozonolysis of 2-butyne gives

Formic acid

Propionic acid

Acetic acid

Butanoic acid

49. Amphioxus belongs to the group of

Urochordates

Amphibia

Cephalochordates

Reptilia

50. Which of the following can be used to stain lipid inclusions in bacteria?

Sudan black

Methylene blue

Trypan blue

Toluidine blue

51. Cleavage asynchrony is often seen during development of fertilized eggs of

Mice

Sea urchin

Snake

Frog

52. The outer most covering of the brain is

Choroid

Arachnoid

Pia mater

Dura mater

53. Hardness in a given water sample is 300ppm CaC03. What would be its molarity?

O.300M

O.030M

O.003M

O.0015M

54. When a single gene influences more than one trait, it is called as

Epistatsis

Pleiotrophy

Pseudodominance

Co-dominance

55. Largest number of Eucalyptus plant species are found in

Australia

India

Bunna

Newzealand

56. The cell organelle involved in the initiation of the intrinsic pathway of apoptosis is

Endoplasmic reticulum

Lysosomes

Mitochondria

Peroxisomes

57. The bond angle associated with the hybrid orbitals of a carbon involved in a triple bond is

180°

120°

109°

45°

58. One of the following is the major pathway of ammonia detoxification

2-Oxoglutarate to glutamate to glutamine

Oxaloacetate to aspartate to alanine

2-Oxoglutarate to aspartate to alanine

Pyruvate to alanine to lactic acid

59. Hybridoma technology was developed by

Kohler and Milstein

Landsteiner

Armauer Hansen

Emil von Behring

60. CD8+ T cells differentiate into that are capable of recognizing and killing infected cells

T helper cells

Cytotoxic cells

Dendritic cells

Natural Killer cells

61. One of the following drugs is effective against Mycobaterium tuberclosis

Amoxycillin

Methycillin

Isoniazid

Erythromycin

62. 2,2 -Dichloropropane reacts with aqueous KOH to give

2,2-Propanediol

Propanol

Acetone

n-Propyl alcohol

63. Who established DNA and not protein as the genetic material?

Hershley and Chase

Messelson and Stahl

Kohler and Milstein

Barbara McClintock

64. The deficiency of one of the following enzymes causes Albinism

Catalase

Fructokinase

Xanthine oxidase

Tyrosinase

65. Viable material of endangered plant species can be preserved through

Gene bank

Gene library

Gene pool

Herbarium

66. One of the following is the strongest acid

Fonnic acid

Trichloroacetic acid

Acetic acid

Trifluoroacetic acid

67. The pigment which helps some mammals to clearly see during night is

Iodopsin

Guanin

Retinene

Scotoptin

68. In a population of lX108 bacterial cells, the number of cells remaining after 50% killing will be

1X10^4

O.5X10^8

O.5X10^4

O.2X10^4

69. Blue green algae are

Photoautotrophs

Chemoautotrophs

Photoheterotrophs

Chemoheterotrophs

70. One of the following samples contain atoms

8gO2

3 g Be

8 g C

12 g He

71. Graft rejection is due to activation of

Host T cells, which recognize graft

Host B cells, which recognize graft cells as foreign cells as foreign

Host macrophages, which kill graft

Host dendritic cells, which kill graft cells cells

72. Which of the following disease condition though harmful in itself, confers advantage from a mosquito borne infectious disease?

Thalassaemia

Sickle cell anemia

Leukaemia

Pernicious anemia

73. An example of achiral amino acid is

Alanine

Glutamine

Glycine

Tryptophan

74. The plant used for preparing green manure in India is

Cotton

Com

Sunhemp

Sunflower

75. Ketones react with Grignard reagents to form an addition product which on hydrolysis gives a

Primary alcohol

Tertiary alcohol

Secondary alcohol

Ketal

76. Gene targeting is primarily done on

A sperm cell

An egg cell

A fertilised ovum

Early embryonic cells

77. The type of bond existing in trehalose, a disaccharide present in fungi and insects is









78. Which has maximum entropy of vapourisation?

Ethanol (liquid)

Benzene (liquid)

Toulene (liquid)

C02

79. Erythroblastosis fetal is is caused due to

Sex chromosome incompatibility

Rh and ABO incompatibility

Epigenetic modifications

Hemophilia

80. In the Krebs cycle, citrate loses two of its six carbons as C02 during its conversion to oxaloacetate. From the citrate structure, which two carbons are lost to give rise to C02?

Cl and C2

Cl and C4

Cl and C6

C4 and C6

81. One of the following is not a cytoplasmic organelle of the cell

Endoplasmic reticulum

Mitochondria

Peroxisomes

Nucleolus

82. Which of the following compounds will give an idoform test?

Benzoic acid

Ethanol

Benzyl chloride

Methanol

83. The parasite which has only one host­

Taenia solium

Plasmodium vivax

Leishmania donovani

Entamoeba histolytica

84. Acid rains are caused by

Ozone

Oxides of nitrogen

Oxides of sulphur

Oxides of carbon

85. The process of phagocytosis was discovered by

Robert Koch

Ilya Mechnikov

Louis Pasteur

Edward Jenner

86. Binomial nomenclature was proposed by

Carlo Allioni

Carl Linnaeus

Alexander Hamilton

Robert Almer Harper

87. Which of the following compounds will be easily oxidized?

Primary alcohol

Secondary alcohol

Tertiary alcohol

Aldehyde

88. The gland with both exocrine and endocrine functions is

Thyroid

Pancreas

Mammary gland

Pituitary

89. After intense exercise, the lactate produced in skeletal muscles is transported to liver where it is converted into glucose. These reactions constitute

Gluconeogenesis

HMP shunt

Kelvin cycle

Cori cycle

90. The rate of chemical reaction generally increases rapidly even for small temperature increase because of rapid increase in

Collision frequency

Fraction of molecules with energy in excess of the activation energy

Activation energy

Average kinetic energy of the molecule

91. Well defined acrosome is not found in the spermatozoa of

Frog

Fish

Snake

Birds

92. Number of (OHy ions in 1 ml solution of pH=13 is

lX10^-13

6X10^7

6X10^13

6.02X10^19

93. Pytalin is secreted by

Pancreas

Stomach

Liver

Salivary glands

94. Chronic exposure to arsenic causes

Skeletal florosis

Black foot disease

Blue baby syndrome

Night blindness

95. Cyclic ethers with three membered rings are called

Lactones

Oxiranes

Alkoxides

Epoxy resins

96. The major pollutant from automobile exhaust is

NO

CO

S02

Soot

97. Higher rate of photosynthesis occurs in

Red light

Blue light

White light

Yellow light

98. Select the incorrect statement

There is no change in concentration of the reactants the and

Equilibrium is always dynamic

products at equilibrium Equilibrium can be approached from either of the sides

Catalyst can alter the state of equilibrium

99. Pepsin is an example of

Hormone

Enzyme

Vitamin

Mineral

100. The process by which oxygen passes from lung alveoli into blood capillaries is

Diffusion

Osmosis

Active transport

Passive transport