Scelta multipla
What ensures that the correct amino acid is added during translation?
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15. Gene Expression
Introduction to Translation
Scelta multipla
What role do ribosomes play in protein synthesis?
A
They facilitate the binding of tRNA to mRNA to synthesize proteins.
B
They replicate DNA during cell division.
C
They transcribe DNA into mRNA.
D
They transport amino acids to the nucleus.
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Understand that ribosomes are cellular structures where protein synthesis occurs, a process known as translation.
Recognize that during translation, ribosomes facilitate the binding of transfer RNA (tRNA) to messenger RNA (mRNA).
Note that each tRNA molecule carries a specific amino acid, which corresponds to a codon on the mRNA strand.
Realize that the ribosome moves along the mRNA, reading its sequence and ensuring that the correct tRNA binds to each codon, thus adding the appropriate amino acid to the growing polypeptide chain.
Conclude that ribosomes are essential for synthesizing proteins by linking amino acids in the order specified by the mRNA, not by replicating DNA, transcribing DNA into mRNA, or transporting amino acids to the nucleus.
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