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Multiple Choice
In the context of functional groups, what is attached to a charged tRNA molecule?
A
A nitrogenous base
B
A phosphate group
C
A ribose sugar
D
An amino acid
Verified step by step guidance
1
Understand the role of tRNA: Transfer RNA (tRNA) is responsible for bringing amino acids to the ribosome during protein synthesis.
Identify the structure of tRNA: tRNA has an anticodon region that pairs with the mRNA codon, and an acceptor stem where the amino acid is attached.
Recognize the functional group involved: The acceptor stem of tRNA has a 3' end where the amino acid is covalently bonded.
Clarify the attachment process: The amino acid is attached to the tRNA by an enzyme called aminoacyl-tRNA synthetase, forming an ester bond.
Conclude the attachment: The charged tRNA, also known as aminoacyl-tRNA, carries the specific amino acid corresponding to the mRNA codon it pairs with.