Question

identify the mrna codon that activates the connection of the large subunit of the ribosome. what is a codon? tac aug uac uga

Explanation:

To determine the mRNA codon that activates the large ribosomal subunit connection, we recall:

• mRNA uses A, U, C, G (no T, so TAC is invalid as it has T, ruling it out).
• The start codon for translation (which involves ribosomal subunit assembly) is AUG.
• UAC is a tRNA anticodon - related, not a ribosome - activating codon.
• UGA is a stop codon, not for activation.

So AUG is the mRNA start codon that initiates translation, including the connection of the large ribosomal subunit.

Answer:

B. AUG (assuming the options are labeled with A, B, C, D where A is TAC, B is AUG, C is UAC, D is UGA)