GATE Zoology Question Papers

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GATE Zoology Question Papers

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Question Papers of GATE Zoology

1. DNA with right handed helix, 11 base pair per turn and angle of rotation per base is nearly 32.7° called
(1) A-DNA
(2) B-DNA
(3) C-DNA
(4) Z-DNA

2. A group of membrane bound cell organelles is
(1) Endoplasmic reticulum, ribosomes, nucleus
(2) Chromosomes, ribosomes, endoplasmic reticulum
(3) Ribosomes, Golgi bodies, endoplasmic reticulum
(4) Lysosomes, Golgi complex, mitochondria

3. Calcium dependent kinases can control
(1) cell surface receptors
(2) cell cycle activities
(3) DNA replication
(4) spindle fibres

4. Combination of histone molecules that combines with the DNA to form the nucleosome core are :
(1) HIA, HIB, H2, H3
(2) H1, H2A, H2B, H3
(3) H1, H2, H3, H4
(4) H2A, H2B, H3, H4

5. Which one of the following biomolecule is correctly characterised ?
(1) Palmitic acid : an unsaturated fatty acid with 18 carbon atom.
(2) Adenylic acid : adenosine with a glucose phosphate molecule.
(3) Alanine amino acid : contains an amino group and no acidic group in the molecule.
(4) Lecithin : a phosphorylated glyceride found in cell membrane

6. Hatchek pit in Amphioxus is present at
(1) roof of oral cavity
(2) intestine
(3) vestibule
(4) anal opening

7. Paraffin wax is
(1) Acid
(2) Ester
(3) monohydric alcohol
(4) cholesterol

8. Which of the following fructose phosphate, when in low conc. stimulates gluconeogenesis ?
(1) Fructose-1 -phosphate
(2) Fructose-6-phosphate
(3) Fructose-1, 6-biphosphate
(4) Fructose-2, 6-biphosphate

9. A rare inherited glycogen storage disease is
(1) Philadelphia syndrome
(2) Jacob’s syndrome
(3) McArdle’s disease
(4) Hanson’s disease

10. The only enzyme that participates in both, Kreb’s cycle and electron transport chain is
(1) Hexokinase
(2) Aldolase
(3) succinate dehydrogenase
(4) cytochrome C oxidase

11. Chief end products of carbohydrate and fat metabolism are
(1) H2O and CO2
(2) H2O and pyruvic acid
(3) CO2 and pyruvic acid
(4) None of these

12. Which of the following is an essential fatty acid for vertebrates ?
(1) Tryptophan
(2) Lecithus
(3) Propionic acid
(4) Linoleic acid

13. Sphingosine :
(1) is a backbone of phosphoglycerides.
(2) is an amino alcohol with long chain of unsaturated hydrocarbons
(3) chain has a total of 40 carbons
(4) chain has C2 carbon with acidic group

14. Which of the following does not contribute in sugar metabolism ?
(1) Insulin
(2) Glucagon
(3) Cortisone
(4) Acetylcholinestrase

15. The enzyme which is not used during β-oxidation of fatty acids
(1) Acetyl CoA decarboxylase
(2) Thiolase
(3) Enoyl CoA hydratase
(4) β-hydroxy acetyl CoA dehydrogenase

16. In the absence of glucose or during prolonged starvation the energy source of the brain is
(1) Fat
(2) Ketone bodies
(3) Protein
(4) Lipids

17. Find the incorrect option with regard to type of cells present in a particular organ.
(1) Kupffer cells — Liver
(2) Chromaffin -— Adrenal gland cells
(3) Paneth cells – Kidney
(4) Somatotropic — Adenohypophysis cells

18. Prothrombin required for blood clotting is produced by
(1) Liver
(2) Pancreas
(3) Brain
(4) Spleen

19. The vitamin excreted by vertebrate kidney is
(1) A
(2) D
(3) C
(4) K

20. In vertebrates a protein material which is actual carrier of hormone, synthesised by neuro-secretary cells is called
(1) Vasopressin
(2) Neurophysine
(3) Oxytocin
(4) Eclosion

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Objective

21. Smallest muscle in human body
(1) Sartortus
(2) Stapes
(3) Stapedius
(4) Spinal muscles

22. Which one of the following enzyme is of outer mitochondril chamber ?
(1) NADH — cytochrome C reductase
(2) Adenylate kinase
(3) Malate dehydrogenase
(4) ATP — synthetase

23. The process which chloride ions pass into RBC and bicarbonate ions pass out is called
(1) Bicarbonate shift
(2) Chloride shift
(3) Buffer system
(4) Enzyme shift

24. Which of the given vitamins is also considered as a hormone ?
(1) Ascorbic acid
(2) Calciferol
(3) Thiamine
(4) Riboflavin

25. What change occurs in haemoglobin structure due to mutation that results in sickle cell anaemia ?
(1) glutamic acid in β-chain of globin is replaced by valine
(2) valine in β-chain of globin is replaced by glutamic acid
(3) glutamic acid in o-chain of globin is replaced by valine
(4) valine in a-chain of globin is replaced by glutamic acid

26. In birds the sex chromosomes are designated as
(1) X and Y chromosomes
(2) Z and W chromosomes
(3) X and Z chromosomes
(4) A and B chromosomes

27. Which of the following phenotypic ratio shows complementary gene interaction ?
(1) 15:1
(2) 1:2:1
(3) 9:3:3:1
(4) 9:7

28. In Human a single recessive trait which can express its effect should occur on
(1) any autosome
(2) X-chromosome of male
(3) X-chromosome of female
(4) any chromosome

29. Example of Y-linkage disease
(1) Haemophilia
(2) Hypertrichosis
(3) Pseudoricketes
(4) Eye colour in drosophila

30. Alkaptonuria, which is an inborn error of metabolism in human is due to
(1) lack of ability to breakdown homogentisic acid
(2) accumulation of phenyl pyruvic acid
(3) Incapability of converting dihydroxyphenylalamine into melanin
(4) Accumulation 2, 5 — dihydroxyphenyl pyruvic acid

31. Holandric genes are carried by
(1) X chromosome
(2) Different parts of Y chromosome
(3) X and Y chromosomes both
(4) Autosomes

32. Development of unrelated groups of animals along parallel lines in adaptation to a similar environment is called
(1) Adaptive convergence
(2) Adaptive radiation
(3) Adaptive divergence
(4) Adaptive induction

33. Cortical granules in egg are made up of
(1) Melanin
(2) Mucopolysaccharide
(3) Albumin
(4) Lipoprotein

34. Nebenkern is a part of
(1) Ovary (human)
(2) Ovum
(3) Sperm (human)
(4) Kreb cycle

35. What type of egg membrane are the calcareous shell in hen’s and jelly in frog’s egg ?
(1) Primary
(2) Secondary
(3) Tertiary
(4) shell secondary and jelly primary

36. Cells of Rauber are
(1) Secretory cells of endometrium in uterus
(2) inner cell mass of blastocoel
(3) outer cells of trophoblast in contact with uterine wall
(4) cells of trophoblast, in contact with inner cell mass of blastocyst

37. Change in a chromosome during ageing is
(1) increase in length
(2) change in nucleotide
(3) shortening of the telomere length
(4) change in DNA sequence

38. Diploid parthenogenesis occurs in
(1) Honey bee
(2) Arachnids
(3) Artemia
(4) Lecanium putanami

39. “Spiral holoblastic” cleavage is not present in
(1) Nemertea
(2) tubellarian flatworm
(3) cephalopoda
(4) Trochus

40. How many extraembryonic membrane develops in the cleidoic egg ?
(1) Four
(2) Three
(3) Five
(4) Two

41. During development of chick 12-pairs of cranial nerves appear in the embryo of
(1) 72 hours
(2) 96 hours
(3) 24 hours
(4) 48 hours

42. Regeneration of complete individual from a small portion of Hydra is
(1) Morphollaxis
(2) Epimorphosis
(3) Physiological regeneration
(4) Compensatory hypertrophy

43. Deciduale placenta present in
(1) Cow
(2) Pig
(3) Human
(4) lemur

44. Which of the following Indian sites are included in UNESCO World Heritage Sites (Natural) ?
A. Great Himalayan National Park
B. Keoladeo National Park
C. Western Ghats
D. Manas Wildlife Sanctuary
Find the correct choice :
(1) Only A and C
(2) Only B, C, D
(3) Only A, B, D
(4) A,B, C and D

45. The phenomenon of increasing concentration of a toxic chemical in the tissues of organisms at successively higher levels in a food chain :
(1) Bioaccumulation
(2) Biotransformation
(3) Biomagnification
(4) Bioremediation

46. One of pattern of soil erosion caused by wind is
(1) Incineration
(2) Mulching
(3) Land slide
(4) Saltation

47. Constituents of biogas are
A. Hydrogen sulphide
B. Methane
C. Carbon dioxide
Select the correct answer :
(1) only A and B
(2) only B
(3) only B and C
(4) A, B and C

48. Gross primary productivity of an ecosystem is
(1) the rate of production of inorganic matter during metabolism.
(2) the rate of production of organic matter during photosynthesis.
(3) the rate of consumption of energy during respiration
(4) the rate of consumption of inorganic matter during metabolism.

49. Which is not a Ramsar site ?
(1) Rudrasagar lake
(2) Keoladeo National Park
(3) Sunderbans Wetland
(4) Ujini Wetland

50. Itai — Itai disease is caused by
(1) Pb
(2) Cr
(3) Cd
(4) Hg

51. Which of the following is used extensively in vermiculture ?
(1) Neanthes caudata
(2) Eisenia foetida
(3) Pheretima posthuman
(4) Lumbricus terrestris

52. Concept of innate releasing mechanism was given by
(1) Konard Lorenz
(2) Niko Tinbergen
(3) Darwin
(4) Pavlov

53. As per Thorpe, which of the following is not a flexible learning ?
(1) Habituation
(2) Latent learning
(3) Reasoning
(4) Imprinting

54. Incubation of bigger size eggs by Grey leg goose is an example of
(1) sign stimulus
(2) auditory stimulus
(3) supernormal stimulus
(4) chemical stimuli

55. Monarch and viceroy butterflies are the vivid examples of
(1) Parthenogenesis
(2) Parasitism
(3) mimicry
(4) social insects

56. Which one of the following is not true about Wernick’s area ?
(1) Located in right temporal lobe.
(2) It act as store house for vocabulary.
(3) It is responsible for understanding written language.
(4) It is responsible for understanding spoken language.

57. Which subclass of IgG cannot cross placenta easily ?
(1) IgGl
(2) IgG2
(3) IgG3
(4) IgG4

58. Associated with immune system, these dendritic cells are present in the skin :
(1) CD4 cells
(2) Langerhans cells
(3) NK cells
(4) T-cells

59. Which of the following is the human embryonic lung cell line ?
(1) HeLa
(2) MRC-5
(3) WISH
(4) L

60. Which of the following cells have a high affinity receptor for IgE in human ?
(1) Dendritic cells
(2) Langerhans cells
(3) Monocytes
(4) Basophils