Biology MCQs

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

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32. Malaria is an acute febrile illness caused by__.
[A] Salmonella typhi
[B] Mycobacterium
[C] Plasmodium parasites
[D] Bordetella pertussis

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33. Which of the following is the earliest geological period?
[A] Cambrian
[B] Permian
[C] Jurassic
[D] Quaternary

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34. A rare way that a trait or disorder can be passed down through families is called which of the following?
[A] Sex-linked recessive
[B] Sex-linked dominant
[C] Autosomal dominant
[D] None of these

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35. What is Southern blotting?
[A] Attachment of probes to DNA fragments
[B] Transfer of DNA fragments from electrophoretic gel to a nitrocellulose sheet
[C] Comparison of DNA fragments to two sources
[D] Transfer of DNA fragments to electrophoretic gel from cellulose membrane

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36. What may complicate the process of gene cloning within the cell?
[A] One recognition site
[B] Foreign DNA
[C] More than one recognition site
[D] Antibody

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37. In coriander, the useful parts are
____:
[A] Leaves & flowers
[B] Flowers & dried fruits
[C] Roots & leaves
[D] Leaves & dried fruits

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38. Uric acid is the chief nitrogenous wastes in ____:
[A] Frogs
[B] Birds
[C] Fishes
[D] Mankind

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39. Which of the following acids is synthesized in human stomach?
[A] Hydrochloric acid
[B] Sulphuric acid
[C] Nitric acid
[D] Phosphoric acid

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40. The ____ helps in equalising the pressure on either sides of the eardrum:
[A] Malleus
[B] Incus
[C] Cochlear nerve
[D] Eustachian tube

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