SSC General Science & Technology Sample Paper NCERT Sample Paper-3

  • question_answer
    Which one thing is not true about antibiotics?

    A)  The term 'antibiotic' was coined by Selman Waksman in 1942.

    B)  First antibiotic was discovered by Alexander Flemming.

    C)  Each antibiotic is effective only against one particular kind of germ.

    D)  Some persons can be allergic to a particular antibiotic.

    Correct Answer: C

    Solution :

    [c] Antibiotics are divided into two categories depending upon their effect: [a] Broad spectrum antibiotics: They have ability to act on several pathogenic species differing from each-others in structure and composition of cell wall. [b] Specific antibiotics: They act on a few similar type of pathogens. So, the statement that each antibiotic is effective against one particular kind of germ is not true.

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