Multiple choice

Which of the following statements regarding bacitracin is correct?

  1. Bacitracin is used for the treatment of MRSA (methicillin resistant Staphylococcus aureus).

  2. Ribosomes are involved in the synthesis of bacitracin.

  3. Bacitracin can be used to distinguish Streptococcus pyogenes from other 'strep' bacteria.

  4. Bacitracin alters bacterial outer-membrane permeability.
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C Correct answer
Explanation

This is the correct statement. Bacitracin can be used to distinguish Streptococcus pyogenes from other 'strep' bacteria because Streptococcus pyogenes is sensitive to bacitracin while others are resistant.

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