The direction of synthesis for a new mRNA molecule is _______ from a _______ template strand.
A) 5ʹ to 3ʹ; 5ʹ-to-3ʹ
B) 5ʹ to 3ʹ; 3ʹ-to-5ʹ
C) 3ʹ to 5ʹ; 5ʹ-to-3ʹ
D) 3ʹ to 5ʹ; 3ʹ-to-5ʹ
E) 5ʹ to 5ʹ; 3ʹ-to-5ʹ

Question

Quizplus · Accepted Answer

The direction of synthesis for a new mRNA molecule is from the 5ʹ end to the 3ʹ end, using a template strand that runs in the opposite direction, from 3ʹ to 5ʹ. This is because RNA polymerase reads the template strand in the 3ʹ to 5ʹ direction to synthesize mRNA in the 5ʹ to 3ʹ direction.

The Direction of Synthesis for a New MRNA Molecule Is