Platelets act like a temporary plug to prevent more blood loss, they act like a blood clot.
Answer:
B. Virus
Explanation:
Once attached to a host cell, a virus injects its nucleic acid into the cell. The nucleic acid takes over the normal operation of the host cell and the host cell produces multiple copies of the virus.
To create bacteria that produce human insulin scientists insert the human gene of interest into the bacterial plasmid. This is a common method when we want to produce human insulin and is often used in genetic research.
