Question

SARS is a respiratory illness caused by SARS-CoV-1, a coronavirus. It belongs to the same family of viruses that cause common colds.

Streptococcus pneumoniae is a bacterium that causes pneumonia. Pneumonia is an illness that causes fluid buildup in the lungs.

Which of the following statements correctly identifies the characteristics of SARS-CoV-1 and Streptococcus pneumoniae?

(1 point)
Responses

Neither can replicate independently.
Neither can replicate independently.

Streptococcus pneumoniae can replicate independently, but SARS-CoV-1 requires a host cell to replicate.
Streptococcus pneumoniae can replicate independently, but SARS-CoV-1 requires a host cell to replicate.

SARS-CoV-1 can replicate independently, but Streptococcus pneumoniae requires a host cell to replicate.
SARS-CoV-1 can replicate independently, but Streptococcus pneumoniae requires a host cell to replicate.

Both can replicate independently.

Answer 1

Streptococcus pneumoniae can replicate independently, but SARS-CoV-1 requires a host cell to replicate.

Explanation: Streptococcus pneumoniae is a free-living bacterium (can grow and divide on its own, e.g., by binary fission). SARS‑CoV‑1 is a virus and must use a host cell's machinery to replicate.