NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Prepare for the NAPLEX (North American Pharmacist Licensure Examination) Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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Which of the following is classified as an Anaerobe?

Staphylococcus saprophyticus
Pseudomonas aeruginosa
Clostridium spp.
Legionella spp.

The correct answer is: Clostridium spp.

Anaerobes are organisms that do not require oxygen for growth or metabolism. Staphylococcus saprophyticus and Pseudomonas aeruginosa are both bacteria that can survive in the presence of oxygen and are therefore classified as aerobes. Legionella spp. can also grow in the presence of oxygen, making it an aerobe as well. Only Clostridium spp. are classified as anaerobes, as they are capable of surviving and growing in the absence of oxygen.