Multiple Choice
In the context of the central dogma, what are the two main steps of protein synthesis?
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1. Introduction to Biochemistry
Central Dogma
Multiple Choice
During protein synthesis, what is the primary role of mRNA?
A
It catalyzes peptide bond formation between adjacent amino acids in the growing polypeptide.
B
It serves as the template carrying codons that specify the amino acid sequence of a protein.
C
It removes introns from pre-mRNA to produce a mature transcript ready for translation.
D
It delivers specific amino acids to the ribosome by matching anticodons to codons.
Verified step by step guidance1
Understand the central dogma of molecular biology, which describes the flow of genetic information from DNA to RNA to protein.
Recognize that during protein synthesis, messenger RNA (mRNA) is transcribed from DNA and carries the genetic code in the form of codons, which are sequences of three nucleotides.
Identify that the primary role of mRNA is to serve as a template that specifies the order of amino acids in a protein by providing codons that correspond to specific amino acids.
Distinguish the roles of other molecules: ribosomal RNA (rRNA) catalyzes peptide bond formation, transfer RNA (tRNA) delivers amino acids to the ribosome, and splicing factors remove introns from pre-mRNA.
Conclude that mRNA's main function is to carry the codon sequence from the DNA in the nucleus to the ribosome in the cytoplasm, where translation into a polypeptide occurs.
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