Multiple Choice
Which of the following best describes what occurs during the initiation step of DNA transcription?
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10. Transcription
Overview of Transcription
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Which statement best summarizes what happens during transcription?
A
DNA is replicated to produce two identical DNA molecules.
B
Proteins are assembled from amino acids using tRNA and rRNA.
C
Messenger RNA is translated into a polypeptide chain at the ribosome.
D
A segment of DNA is used as a template to synthesize a complementary RNA molecule.
Verified step by step guidance1
Understand that transcription is the process by which genetic information from DNA is copied into RNA, specifically messenger RNA (mRNA).
Recognize that during transcription, a particular segment of DNA serves as a template strand for RNA synthesis.
Recall that RNA polymerase is the enzyme responsible for reading the DNA template and assembling a complementary RNA strand by matching RNA nucleotides to the DNA bases (A pairs with U in RNA, T pairs with A, C pairs with G, and G pairs with C).
Note that transcription results in the formation of a single-stranded RNA molecule that is complementary to the DNA template strand, rather than producing a DNA copy or assembling proteins directly.
Distinguish transcription from other processes such as DNA replication (which produces identical DNA molecules) and translation (which assembles proteins from mRNA).
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