In transcription,
a) rna polymerase links nucleotides to form mrna.
b) the promoter region acts as an initial binding site for mrna
c) both dna strands are used as the templates
d) a polypeptide is formed

In transcription,  RNA polymerase links nucleotides to form mRNA.

Explanation:

The process of transcription implies the formation of a mRNA. Is the first step to genetic expression, and it involves the making of a "copy" of the DNA in RNA. This process is performed by the enzyme RNA polymerase, that links the nucleotides to form the mRNA strand.

The incise b is false, the promoter region acts as a binding site to the RNA polimerase, not the mRNA.

The incise c is false, althoug there are genes in both DNA strands, they do not act simultaneously as templates.

The incise d is false, since the polypeptide formation is the TRANSLATION step, after transcription, according to the Central dogma of molecular biology.

acceleration = 18/3 = 6 m/s per second.

hope i

-lavira: )