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Multiple Choice
Which amino acid is associated with the tRNA that binds to the mRNA start codon AUG?
A
Methionine
B
Valine
C
Leucine
D
Serine
Verified step by step guidance
1
Understand the role of mRNA and tRNA in protein synthesis. mRNA carries the genetic information from DNA to the ribosome, where it is translated into a protein. tRNA molecules bring the appropriate amino acids to the ribosome based on the codon sequence of the mRNA.
Identify the start codon in mRNA. The start codon is typically AUG, which signals the beginning of translation and the start of the protein synthesis process.
Recognize the amino acid associated with the start codon AUG. In the genetic code, AUG is universally recognized as the codon for Methionine.
Consider the function of Methionine in protein synthesis. Methionine is often the first amino acid incorporated into a nascent protein chain, initiating the process of translation.
Review the options provided: Methionine, Valine, Leucine, Serine. Confirm that Methionine is the correct amino acid associated with the start codon AUG, as per the standard genetic code.