Final answer:
RNA polymerase is an enzyme that synthesizes RNA using a DNA template, enabling protein synthesis and gene expression.
Step-by-step explanation:
RNA polymerase is an enzyme found in all living cells that plays a critical role in the process of transcription. It is responsible for synthesizing RNA molecules using a DNA template, thereby creating a complementary RNA strand. This process is essential for protein synthesis and gene expression. RNA polymerase initiates transcription by binding to a specific DNA sequence called a promoter, and then moves along the DNA strand, adding nucleotides to the growing RNA chain until it reaches a termination signal.
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