Question

what is the role of rna?
to provide the original blueprint for protein production
to move information from the ribosomes to the nucleus for protein synthesis
to break down proteins into amino acid monomers
to move information from the nucleus to the ribosomes for protein synthesis

Explanation:

1. Recall the role of RNA (specifically mRNA, a type of RNA) in protein synthesis: DNA has the original blueprint (gene) in the nucleus. mRNA transcribes the genetic information from DNA in the nucleus and carries it to the ribosomes (in the cytoplasm) where protein synthesis occurs.
2. Analyze each option:

• First option: DNA provides the original blueprint, not RNA. Eliminate.
• Second option: Information moves from nucleus to ribosomes, not ribosomes to nucleus. Eliminate.
• Third option: Enzymes (like proteases) break down proteins, not RNA. Eliminate.
• Fourth option: Matches the role of mRNA (a type of RNA) in transporting genetic information from nucleus (where DNA is) to ribosomes for translation (protein synthesis).

Answer:

D. to move information from the nucleus to the ribosomes for protein synthesis