Question

Consider the following statements w.r.t. transcription and select the right choice
(i) The promoter is said to be located towards the $5^{\prime }$ -end of the coding strand.
(ii) The promoter is an RNA sequence that provides a binding site for RNA polymerase.
(iii) The terminator is located towards the $3^{\prime }$ -end of the coding strand.
(iv) The strand that has polarity $3^{\prime }\to 5^{\prime }$ acts as a template strand.

• A. i & iii are incorrect
• B. i & ii are correct
• C. Only ii is incorrect
• D. Only iv is correct

Answer 1

Answer: (C)

-Transcription is under the control of the enzyme RNA POLYMERASE (DNA dependent RNA polymerase)
-The promoter is the place which promotes transcription and it is situated upstream of a structural gene at 5’
-Terminator is situated downstream of the structural gene at the 3’ end of the coding strand.
-One of the two strands of DNA takes part in transcription.