A. prevent cross-contamination.
Answer:
The nervous system has two main parts:
The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
hope it helps :)
Origin of replication
Termination site? I am not too sure about the second one.
Most fearures of the earth si terristrial, thick, out layer
Answer: D. The N-formyl group on methionine prevents fMet from entering interior positions in a polypeptide.