Explanation:
the brain is an important part of the body it controls messages sent through your body and also it is the center for decision making emotions personality and thoughts
<span> a. A long chain of adenine nucleotides is added to the 3' end of mRNA during termination of transcription is the correct about the polyadenylation mechanism.
hope it helps
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Protein is the nutrient that is essential to cellular construction, reproduction, and maintenance.