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ICMR JRF Previous Questions and Answers with explanation

icmr jrf exam
31. Which of the following has the longest wavelength?
a) IR
b) UV
c) gamma rays
d) x-rays

32. Which has the highest energy?
a) beta rays
b) x-rays
c) gamma rays
d) IR rays

33. What is the difference between diamond and graphite?
a) crystalline structure
b) chemical composition
c) tetrahedral structure of diamond
d) none of the above

34. DNA in dehydrated state
a) A- DNA
b)B-DNA
c) Z-DNA
d)triplex DNA

35. The study of sensory perception of animals
a) Prionics
b) phrenology
c) phenology
d) bionomics

36. CD 16, 56 is a marker for
a) B cells
b) T cells
c) plasma cells
d) NK cells

37. Which of the following is used for multiple sequence alignment?
a) BLOSUM
b) BLAST
c) Clustal W
d) PRINT

38. In macroglobulianemia there will be excess production of
a) IgE
b) IgM 
c) IgA
d)I gD

39. Self tolerance of lymphocytes occur in
a) Thymus
b) spleen
c) tonsil
d) liver

40. Osteoporosis affects
a) bone
b) teeth
c) skull
d) brain

41. Which of the following disease is caused by a virus
a) Hog cholera
b) anthrax
c) haemorrhagic septicaemia
d) anaplasmosis

42.  Which of the following ecosystem is the most threatened
a) temperate forest
b) mangroves
c) coral reefs 
d) deserts

43. Communication satellites are found in
a) troposphere
b) stratosphere
c) ionosphere
d) exosphere

44. Which amino acid are formed during stress condition
a) lysine
b) proline
c) Histidine
d) tryptophan

45. Which of the following is not a secondary messenger?
a) IP3
b)DAG
c)Ca++
d) ATP
Learn more:
  • ICMR JRF Model Questions and answers
  • ICMR JRF Previous Questions and Answers (Set 1/ Set 2 )
Answers
31-a, 32-c, 33-c
34-a
a) A- DNA 11bp/turn inducing factor: dehydration
b)B-DNA normal DNA 10bp/turn
c) Z-DNA 12bp/turn; important for transcriptional initiation and activations inducing factor: high salt concentration
d)triplex DNA
35-d
a) Prionics : related to or caused by a prion (protenacious infectious agents)
b) phrenology : the study of the shape and size of the cranium as a supposed indication of character and mental abilities
c) phenology: the study of cyclic and seasonal natural phenomenon in relation to climate and plant or animal life
e) bionomics: The study of sensory perception of animals
36- d
           a) B cells CD 10,19
           b) T cells CD 10
           c) plasma cells CD 27
           d) NK cells CD 16/,56
phagocytes CD14

37-c


38-b

b) IgM  a pentameric immunoglobulin

39-a: Self tolerance or immunological tolerance is the process by which immune system become irresponsive or does not attack an antigen.


40-a,

41-a, a) Hog cholera classical swine fever a viral disease of pigs.
42-b
b) mangroves
Remember, coral reefs are one of the most diverse ecosystems and referred as “rain forest of the seas” second to tropical rainforest in diversity.

43-d


44-b, proline is also called alpha helix terminator, imino acid


45-d, receptors of hormones or hormonal ligands located on the plasma membrane are the first messenger. Second messengers are intracellular signalling molecules.

Other major second messengers: cAMP, cGMP, DAG, IP3,Ca++

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