Biology Today — May 2017

(WallPaper) #1
(d)  cancer cells cannot function properly because they
suffer from density-dependent inhibition.


  1. Live vaccine is a
    (a) low dose of the infectious bacteria administered as
    prophylactic
    (b) dose of modified bacterial strain devoid of its
    pathogenicity but retains immunogenicity
    (c) low dose of toxin that is produced by the bacterium
    (d) sample of cells from a patient who recently recovered
    from the disease.

  2. Match the terms given in column I with their description in
    column II and select the correct codes.
    Column I Column II
    A. Helper T-cells (i) Cells that are active in
    production of antibodies
    B. Plasma cells (ii) Enhance activity of
    cytotoxic T-cells

    C. Killer T-cells (iii) Inhibit function of
    cytotoxic T-cells
    D. Suppressor T-cells (iv) Secrete perforins
    (a) A-(iv), B-(i), C-(ii), D-(iii)
    (b) A-(iii), B-(ii), C-(i), D-(iv)
    (c) A-(i), B-(iii), C-(iv), D-(ii)
    (d) A-(ii), B-(i), C-(iv), D-(iii)

  3. Malignant malaria is caused by
    (a) Plasmodium malariae (b) Plasmodium ovale
    (c) Plasmodium falciparum (d) Plasmodium vivax.

  4. Which of the following is not a symptom of typhoid?
    (a) Low pulse rate with high fever
    (b) Abdominal pain with high pulse rate
    (c) Low pulse rate and frequent stools
    (d) Both (a) and (b)

  5. An autoimmune disease in which the body destroys the
    functioning of thyroid gland is
    (a) Simmond’s disease (b) Grave’s disease
    (c) Hashimoto’s disease (d) Addison’s disease.

  6. Match column I which lists the components of body defense
    with column II that lists the corresponding description and
    choose the correct option.
    Column I Column II
    A. Active natural p. Injection of gamma
    immunity globulins
    B. First line of q. Complement proteins and

    defense interferons
    C. Passive natural r. Direct contact with the
    immunity pathogens that have
    entered inside body
    D. Second line of s. Lysozyme and skin
    defense
    t. Antibodies transferred
    through the placenta


(a)  A-s, B-r, C-t, D-p  (b)     A-r, B-s, C-p, D-t
(c) A-r, B-s, C-t, D-q (d) A-t, B-r, C-q, D-p


  1. The transplantation between the individuals of same species
    of different genetic background is
    (a) autograft (b) allograft
    (c) isograft (d) xenograft.

  2. HIV decreases natural immunity of body by
    (a) attacking T-lymphocytes

    (b) attacking B-lymphocytes
    (c) destroying antibodies

    (d) destroying erythrocytes.

  3. Which of the following is correct option for bacterial
    diseases?
    I. Hansen’s disease II. Measles
    III. Yellow fever IV. Lock jaw
    V. Whooping cough VI. Flu
    (a) II, III, V and VI (b) I, III and VI
    (c) I, IV and V (d) IV, V and VI

  4. Elephantiasis is caused by
    (a) aschelminthes (b) platyhelminthes
    (c) viruses (d) protozoans.

  5. Match column I with column II and select the correct option.
    Column I Column II

    1. LSD (i) Erythroxylon

    2. Caffeine (ii) Thea sinensis

    3. Cocaine (iii) Cannabis

    4. Hashish (iv) Ergot alkaloid
      (a) 1-(iv), 2-(iii), 3-(i), 4-(ii)
      (b) 1-(i), 2-(ii), 3-(iii), 4-(iv)
      (c) 1-(iv), 2-(iii), 3-(ii), 4-(i)
      (d) 1-(iv), 2-(ii), 3-(i), 4-(iii)



  6. Which of the following statements is incorrect?
    (a) An alcoholic may suffer from cholestasis.
    (b) Mallory-Weiss syndrome is characterised by oesophagitis
    and gastritis.
    (c) Alcohol consumption can effect the haemopoietic
    system by decreasing the RBC size.
    (d) Cerebrum is the first part of brain affected after alcohol
    consumption.


ANSWER KEY



  1. (b) 2. (c) 3. (d) 4. (a) 5. (c)

  2. (b) 7. (d) 8. (c) 9. (b) 10. (c)

  3. (d) 12. (c) 13. (d) 14. (c) 15. (b)

  4. (c) 17. (c) 18. (c) 19. (b) 20. (d)

  5. (c) 22. (b) 23. (c) 24. (c) 25. (b)

  6. (a) 27. (c) 28. (a) 29. (d) 30. (c)
    

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