Multiple Choice
In the overview of transcription, which enzyme binds to DNA at the promoter to initiate RNA synthesis?
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10. Transcription
Overview of Transcription
Multiple Choice
In the context of transcription, which statement best defines RNA polymerase?
A
An enzyme that synthesizes an RNA strand by adding ribonucleotides complementary to a DNA template strand
B
An enzyme that synthesizes a DNA strand by adding deoxyribonucleotides complementary to an RNA template strand
C
A protein that removes introns from pre-mRNA to produce mature mRNA
D
A ribosome-associated factor that catalyzes peptide bond formation during translation
Verified step by step guidance1
Understand the role of RNA polymerase in the process of transcription, which is the synthesis of RNA from a DNA template.
Recall that transcription involves creating an RNA strand complementary to the DNA template strand, using ribonucleotides (RNA building blocks).
Recognize that RNA polymerase is the enzyme responsible for catalyzing the addition of ribonucleotides to form the RNA strand during transcription.
Differentiate RNA polymerase from other molecular machines: it does not synthesize DNA, remove introns, or catalyze peptide bonds.
Conclude that the best definition of RNA polymerase is: an enzyme that synthesizes an RNA strand by adding ribonucleotides complementary to a DNA template strand.
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