Polymyxin B Is a Large Molecule with a Hydrophobic Tail

question 49

Multiple Choice

Polymyxin B is a large molecule with a hydrophobic tail that can disrupt phospholipids,making it particularly effective against ________.

• A)gram-negative cells since they have both an outer and inner membrane
• B)gram-positive cells since the peptidoglycan is easily dissolved by detergent-like molecules
• C)fungi since the drug can traverse the complex chitin cell wall to dissolve the cell membrane
• D)both gram-positive and gram-negative cells since they both have a membrane

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