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    Question

    Antibiotics tend to

    be:
    A Primary metabolites Correct Answer Incorrect Answer
    B Secondary metabolites Correct Answer Incorrect Answer
    C Tertiary metabolites Correct Answer Incorrect Answer
    D Quaternary metabolites Correct Answer Incorrect Answer

    Solution

    Antibiotics (e.g., penicillin) are secondary metabolites, produced in stationary phase for ecological competition, not growth (unlike primary metabolites like ATP). 

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