Prokaryotic cells and viruses Quiz
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5 questions, one answer each
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1. Which feature is found in prokaryotic cells but not in eukaryotic cells?
- A. Ribosomes
- B. Cell-surface membrane
- C. A cell wall containing murein
- D. Cytoplasm
2. A bacterial cell is found to lack a nucleus. Where is its DNA?
- A. Inside the capsule
- B. Free in the cytoplasm as a circular molecule
- C. Bound to protein in a nucleolus
- D. Inside the flagellum
3. The protein coat of a virus is the:
- A. Capsid
- B. Capsule
- C. Plasmid
- D. Attachment protein
4. Why are viruses described as non-living?
- A. They contain DNA only
- B. They are smaller than bacteria
- C. They lack a protein coat
- D. They cannot reproduce or carry out metabolism without a host cell
5. An antibiotic prevents bacteria from forming murein. It would be ineffective against which of the following?
- A. Escherichia coli
- B. A virus
- C. Pseudomonas aeruginosa
- D. A growing bacterium with a cell wall