What is the purpose of Strand A?
A to act as a template for the synthesis of messenger RNA
B to carry the code from the DNA molecule in the nucleus to the ribosome
C picks up and transfers specific amino acids to the ribosome
D picks up and transfers nucleic acids to the nucleus

option A

Explanation:

The diagram represents the process of transcription whereby the DNA is unwound and one of its strand is utilized in the synthesis of messenger RNA. strand A in the diagram represents on of the parent strand of the DNA which acts as a template to the synthesis of the mRNA. strand B is the newly synthesized growing mRNA undergoing transcription

tissue

explanation:

it is actually formed by geoup of cells which is tissue

there's the proffessional site that will you.