D. mRNA is synthesized from a strand of DNA.
Transcription, hence the root script, means to write. This is the creation of the mRNA "messenger" information.
Arteries always flow away from the heart versus veins which carry blood to the heart. Bronchi are part of the lungs and move air. Platelets are components of blood that are responsible for clotting the blood.
If the translation does not occur or works badly, then the ribosomes can't create new proteins. If the body fails to make proteins, it stops working. That's because proteins are essential for the well being of your body, and not just in the sense that eating meat gives you protein. The ones created by ribosomes are much more important.
<span>The san Andreas fault
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