Clostridium and Escherichia Are Both Well-Known Genera of Rod-Shaped Bacteria

question 139

Multiple Choice

Clostridium and Escherichia are both well-known genera of rod-shaped bacteria, but they are classified into different groups based on the distribution of peptidoglycan in their cell walls.If E.coli stains red during a Gram stain test, then we know that Clostridium is

• A) one of the archaea.
• B) Gram-positive.
• C) a eukaryote.
• D) Gram-negative.
• E) a spirochete.

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