[Campbell Biology P.451] Which of the following statements correctly describes a step in the... | Practice Question

Which of the following statements correctly describes a step in the lytic cycle of phage T4, according to Figure 19.5?

  • A: During attachment, the phage injects its DNA into the E. coli cell immediately.
  • B: Host cell DNA is degraded after the phage DNA enters the cell.
  • C: Phage proteins are synthesized by viral enzymes only.
  • D: Release of new phage particles occurs when the host cell actively transports them out.

Explanation

According to step 2 of Figure 19.5, 'Entry of phage DNA and degradation of host DNA' states that the sheath of the tail contracts, injecting the phage DNA into the cell, and the cell's DNA is hydrolyzed.