Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein synthesis. In eukaryotic cells, each class of RNA has its own polymerase, whereas in prokaryotic cells, a single RNA polymerase synthesizes the different class of RNA. Other types of RNA also exist but are not as well understood, although they appear to play regulatory roles in gene expression and also be involved in protection against invading viruses.
Answer: A) Tropical regions have more available niches into which new species can occupy.
Explanation: USATestPrep
Explanation:
A because in the pental development the men and women sex others for there fun and baby in this ara
I wanna say A. Desert
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D. Proteins help control substances by making trans-membrane channels.
