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Multiple Choice
What is the primary function of messenger RNA (mRNA) in gene expression?
A
It delivers amino acids to the ribosome during translation by matching anticodons to codons.
B
It carries the genetic code transcribed from DNA to the ribosome, where it serves as the template for protein synthesis.
C
It removes introns from pre-mRNA and joins exons together to produce mature mRNA.
D
It forms the catalytic core of the ribosome and catalyzes peptide bond formation.
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Verified step by step guidance
1
Understand that gene expression involves two main processes: transcription and translation.
Recognize that during transcription, messenger RNA (mRNA) is synthesized as a complementary copy of the DNA sequence of a gene.
Know that the primary role of mRNA is to carry this genetic information from the DNA in the nucleus to the ribosome in the cytoplasm.
At the ribosome, mRNA serves as a template that dictates the specific sequence of amino acids to be assembled into a protein during translation.
Distinguish this function from other RNA types: tRNA delivers amino acids, rRNA forms the ribosome's core, and splicing involves processing pre-mRNA, not the primary function of mRNA.