MRNA is needed in the cells because it directs the synthesis of proteins which is found in the cytoplasm. It is a molecule that carries the message contained within DNA to the ribosome. The Proteins are assembled on the ribosomes using the mRNA nucleotide sequence as a guide.
The epiglottis covers the larynx to prevent food from entering the lungs.
Explanation:
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Answer: Yes! there is life in the stratosphere but not the type you think, it's actually microbial life forms that live on it.
It is called amino acids,amino acids are molecules composed of atoms of carbon, hydrogen,nitrogen, oxygen, and in some cases sulfur. Hope this helps
