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Multiple Choice
What occurs when a tRNA anticodon pairs with a complementary mRNA codon during translation?
A
The ribosome disassembles and translation stops.
B
The mRNA is degraded by ribonucleases.
C
The tRNA is ejected from the ribosome without adding an amino acid.
D
The tRNA releases its amino acid to the growing polypeptide chain.
Verified step by step guidance
1
Understand the process of translation: Translation is the process by which the genetic code carried by mRNA is decoded to produce a specific sequence of amino acids in a polypeptide chain.
Identify the role of tRNA: Transfer RNA (tRNA) is responsible for bringing amino acids to the ribosome during translation. Each tRNA molecule has an anticodon that pairs with a complementary codon on the mRNA.
Recognize the pairing mechanism: The anticodon of the tRNA pairs with the complementary codon on the mRNA within the ribosome. This pairing is crucial for the correct addition of amino acids.
Determine the outcome of pairing: When the tRNA anticodon pairs with the mRNA codon, the tRNA releases its amino acid, which is then added to the growing polypeptide chain.
Understand the continuation of translation: The ribosome continues to move along the mRNA, and new tRNA molecules bring additional amino acids, elongating the polypeptide chain until a stop codon is reached.