AP Biologymediummcq1 pt
In transcription, RNA polymerase reads the DNA template in which direction?
A.3′→5′, building RNA 5′→3′
B.5′→3′, building RNA 3′→5′
C.Both directions simultaneously
D.Randomly along the strand
Explanation
Core Concept
The polymerase moves along the template strand 3′ to 5′ while adding RNA nucleotides to the new strand's 3′ end — antiparallel synthesis, like replication.
Correct Answer
A3′→5′, building RNA 5′→3′
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