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Multiple Choice
Which of the following is incorrect about transfer RNA (tRNA)?
A
tRNA has an anticodon region that pairs with the mRNA codon.
B
tRNA is synthesized in the nucleus and functions in the cytoplasm.
C
tRNA directly encodes the sequence of amino acids in a protein.
D
tRNA molecules are responsible for bringing amino acids to the ribosome during protein synthesis.
Verified step by step guidance
1
Understand the role of tRNA in protein synthesis: tRNA is crucial for translating the genetic code from mRNA into a sequence of amino acids, which will form a protein.
Recognize the structure of tRNA: tRNA has an anticodon region that pairs with the complementary codon on mRNA, ensuring the correct amino acid is added to the growing polypeptide chain.
Identify where tRNA is synthesized and functions: tRNA is synthesized in the nucleus and then transported to the cytoplasm, where it participates in protein synthesis at the ribosome.
Clarify the function of tRNA: tRNA does not directly encode the sequence of amino acids; instead, it acts as an adaptor molecule that brings specific amino acids to the ribosome based on the mRNA codon sequence.
Evaluate the statements: The incorrect statement is that tRNA directly encodes the sequence of amino acids in a protein, as its role is to transfer amino acids, not encode them.