8
AssignmentMultiple Choice

Protein Synthesis

Question 8 • First Semester Biology

At what point during protein synthesis are genes expressed?

Answer
A
When the mRNA is joined with anticodons from tRNA, the gene is expressed.
B
When translation is terminated, the gene is expressed.
C
When the protein for a particular gene is formed, the gene is expressed.

Explanation

Gene expression means using the information in a gene to produce its functional product, usually a protein. During protein synthesis, translation reads the mRNA and links amino acids together; when the protein for that gene is formed, the gene has been expressed. The mRNA does not join with tRNA anticodons—anticodons pair with matching mRNA codons during translation.

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