tRNA's Role in Protein Translation

Steps:

• Identify statement 1: Describes anticodon-codon hydrogen bonding, which temporarily pairs tRNA with mRNA during translation.
• Evaluate statement 2: mRNA codons are complementary to tRNA anticodons, not identical, so sequences differ.
• Assess statement 3: tRNA decodes mRNA codons by delivering matching amino acids to form polypeptide chains.
• Select option matching true statements: 1 and 3 are accurate, excluding 2.

Why C is correct:

• C includes only statements 1 and 3, aligning with tRNA's binding via hydrogen bonds and its function in converting mRNA sequences to amino acids per the genetic code.

Why the others are wrong:

• A: Includes false statement 2 about sequence identity.
• B: Includes false statement 2 and excludes true statement 3.
• D: Excludes true statement 1 about hydrogen bonding.

Final answer: C