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Multiple Choice
Which molecule provides the energy required to charge tRNAs during protein synthesis?
A
NADH
B
FADH2
C
GTP
D
ATP
Verified step by step guidance
1
Understand the role of tRNA in protein synthesis: tRNA molecules are responsible for bringing amino acids to the ribosome, where proteins are synthesized. Each tRNA must be charged with the correct amino acid before it can participate in translation.
Recognize the energy requirement for charging tRNAs: Charging tRNAs involves attaching an amino acid to the tRNA molecule, a process that requires energy.
Identify the molecule that provides energy for cellular processes: ATP (adenosine triphosphate) is the primary energy carrier in cells, providing energy for various biochemical reactions, including the charging of tRNAs.
Consider the mechanism of tRNA charging: The enzyme aminoacyl-tRNA synthetase catalyzes the attachment of an amino acid to its corresponding tRNA, using ATP as the energy source.
Conclude that ATP is the molecule that provides the energy required to charge tRNAs during protein synthesis, as it is the universal energy currency in the cell.