The structure that surrounds the cell membrane of some cells, giving the cell a rigid shape is the cell wall.
Answer:
The correct answer will be option-B.
Explanation:
Viral polymerases are the enzymes which play an important role in the viral genome transcription and replication.
Retrovirus is the single-stranded RNA viruses which replicate through a DNA intermediate and therefore requires the <em>RNA-dependent DNA polymerase or reverse transcriptase</em>. Reverse transcriptase encodes DNA from the strand of RNA which can be replicated and helps in the reproduction of the virus.
Thus, option- B is the correct answer.
Answer:
So blood can reach the fetus
Explanation:
Answer: What are my answer choices?
Explanation:
Absence of true roots stems and leaves