Question

which molecule copies code from the nucleus and delivers it to ribosomes? amino acids mrna trna dna

Explanation:

• Amino acids: These are the building blocks of proteins, not involved in copying and delivering genetic code.
• mRNA (messenger RNA): During transcription, mRNA is synthesized from DNA in the nucleus. It then carries the genetic code (copied from DNA) to the ribosomes in the cytoplasm, where translation (protein synthesis) occurs.
• tRNA (transfer RNA): Its role is to bring amino acids to the ribosomes during translation, not to copy and deliver the code from the nucleus.
• DNA: It stores the genetic information in the nucleus but does not directly deliver the code to ribosomes for protein synthesis.

Answer:

B. mRNA