Biology MCQs

31. Which of the following conveys the longest-lasting immunity to an infectious agent?
[A] Active immunity
[B] Passive immunity
[C] Both 1 and 2
[D] None of the above

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32. Which is the Growth hormone inhibiting hormone?
[A] FSH
[B] TRH
[C] GHRH
[D] Somatostatin

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33. What hormones do the parathyroid gland produce?
[A] thyroid hormones
[B] parathormone
[C] prolactin
[D] All of the above

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34. Ovarian __ consists of a white body or corpus Albicans.
[A] cortex
[B] medulla
[C] antrum
[D] luteum

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35. Which disease is caused by Yersinia pestis?
[A] Pertussis
[B] Plague
[C] Leprosy
[D] Diptheria

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36. What diseases are caused by Staphylococcus aureus?
[A] skin infections
[B] endocarditis
[C] osteomyelitis
[D] All of these

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37. Which of the following is called Mendel’s first law of inheritance?
[A] Law of Dominance
[B] Law of Segregation
[C] Law of Independent Assortment
[D] All of the above

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38. The tendency of an offspring to resemble its parent is known as ___
[A] Variation
[B] Heredity
[C] Resemblance
[D] Inheritance

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39. Which of the following is NOT a function of restriction enzymes?
[A] Cleaving DNA at specific sites
[B] Generating fragmentation patterns of DNA
[C] Creating recombinant DNA
[D] Synthesizing new DNA strands

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40. Which chemical is used to obtain a precipitate of pure DNA?
[A] Methanol
[B] Ether
[C] HCl
[D] Ethanol

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