Binary fission and virus replication Quiz
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5 questions, one answer each
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1. Which structures are replicated before a bacterium divides by binary fission?
- A. The nucleus and spindle
- B. Circular DNA and plasmids
- C. Mitochondria and chloroplasts
- D. Linear chromosomes and centromeres
2. A bacterium has a generation time of 40 minutes. How many cells will there be from one cell after 4 hours?
- A. 6
- B. 24
- C. 64
- D. 128
3. What does a virus inject into a host cell?
- A. Its protein coat
- B. Its ribosomes
- C. Its nucleic acid
- D. Its cytoplasm
4. Which statement about plasmids after binary fission is correct?
- A. Each daughter cell has exactly one plasmid
- B. Each daughter cell has a variable number of copies
- C. Plasmids are only found in one daughter
- D. Plasmids are destroyed during division
5. Why are viruses said not to undergo cell division?
- A. They divide only at night
- B. They are non-living and rely on the host cell to replicate the virus particles
- C. They have a nucleus that cannot divide
- D. They have too few proteins to divide