Which of the following best describes the role of RNA polymerase in a cell?
A. It modifies an mRNA transcript by adding a poly-A tail and removing introns.
B. It attaches to a DNA strand and unzips the molecule into two separate strands.
C. It initiates translation of mRNA at the start codon for protein synthesis.
D. It reads the DNA molecule for synthesis of a complementary strand of mRNA.
Answer (1)
RNA polymerase is essential for transcription, where it reads DNA and synthesizes mRNA. It binds to the DNA template, unwinds the strands, and creates a complementary mRNA strand. This process allows for the expression of genes necessary for protein synthesis. ;
