Question

which type of rna acts like a disposable sticky note, carrying the secret code from the dna in the nucleus out to the factory floor (the ribosome)?
trna (transfer rna)
mrna (messenger rna)
rrna (ribosomal rna)
snrna (small nuclear rna)

Explanation:

• tRNA (Transfer RNA): Its main function is to transfer amino acids to the ribosome during protein synthesis, not to carry the code from DNA.
• mRNA (Messenger RNA): It is transcribed from DNA in the nucleus and then moves to the ribosome (the site of protein synthesis). It carries the genetic code (like a "message" or "code - carrying sticky note") from DNA to the ribosome.
• rRNA (Ribosomal RNA): It is a component of the ribosome itself and is involved in the structure and function of the ribosome in protein synthesis, not in carrying the DNA code.
• snRNA (Small Nuclear RNA): It is mainly involved in RNA splicing (processing of pre - mRNA) in the nucleus and not in transporting the DNA code to the ribosome.

Answer:

mRNA (Messenger RNA)