Practice MCAT Question - Q85 - Answer!

A rod-shaped bacterial species that is usually arranged in chains of cells would be called

A. staphylococcus.

B. streptococcus.

C. diplobacillus.

D. streptobacillus.

The correct answer is (D). Bacilli are rod-shaped, while cocci are round. Different species have cells arranged in pairs (diplo-), chains (strepto-), and clusters (staphylo-).

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