The answer is B) These fuels are available in a limited supply- - when the fuel is used it is no longer available.
<span>Messenger RNA (mRNA) molecules are long strands of RNA nucleotides that directribosomes to make proteins. They travel from the nucleus to the ribosome. Ribosomal RNA (rRNA) molecules make up part of the ribosomes of the cell in the cytoplasm. Transfer RNA (tRNA) molecules transport amino acids to the ribosomes.</span>
1. RNA polymerase unzips DNA
2. Free RNA nucleotides pair with complementary DNA nucleotides
3. The mRNA molecule breaks away as the DNA strands rejoin.
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