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    Question

    Which of the following statements is/are correct?

    a.       Better the medium for growth for the microorganisms, more heat resistant are the cells or spores

    b.      A small amount of glucose in a medium may lead to increased heat resistant of the microorganisms

    c.       Mg2+ is said to increase the heat resistance of the bacterial spores

    d.      Mg2+ is said to decrease the heat resistance of the bacterial spores

    A a,b,c Correct Answer Incorrect Answer
    B a,c,d Correct Answer Incorrect Answer
    C a,b,c,d Correct Answer Incorrect Answer
    D b,c,d Correct Answer Incorrect Answer
    E a,b,d Correct Answer Incorrect Answer

    Solution

    Mg2+ decreases heat resistance of microorganisms whereas glucose increases the heat resistance and the more better the medium is for heat resistance, the more heat resistant the cells growing in it are.

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