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Biology MCQs with Answers


This is Biology MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.

  1. 11 Botulism is caused by the presence of toxin developed by
  2. 12 A bacterial food intoxication refers to
    1. illness caused by presence of pathogens

    2. food borne illness caused by the presence of a bacterial toxin formed in food

    3. both (a) and (b)

    4. none of the above

    See Answer

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  3. 13 The staphylococcal intoxication refers to presence of
    1. an enterotoxin

    2. neurotoxin

    3. mycotoxin

    4. All of these

    See Answer

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  4. 14 Which of the following is a food infection?
    1. Salmonellois

    2. Botulism

    3. Staphylococcal intoxication

    4. None of these

    See Answer

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  5. 15 Which of the following toxin causing botulism is less toxic to human beings?
    1. Type A

    2. Type B

    3. Type C

    4. None of these

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  6. 16 High acid foods with a pH above 5.3 are especially subjected to
    1. flat sour spoilage

    2. putrefaction

    3. both (a) and (b)

    4. TA spoilage

    See Answer

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  7. 17 The putrifactive anaerobes grow best in the
  8. 18 High acid foods with a pH < 3.7 undergo spoilage by
    1. Saccharolytic anaerobe

    2. B. coagulans

    3. both (a) and (b)

    4. do not undergo spoilage by microorganisms

    See Answer

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  9. 19 Canned meat and fish exhibit spoilage by
    1. Bacillus species

    2. Clostridium species

    3. both (a) and (b)

    4. Saccharomyces

    See Answer

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  10. 20 Canned poultry is more often spoiled by