Which molecule or reaction supplies the energy for polymerization of nucleotides in the process of transcription?
A) the interaction between RNA polymerase and the promoter
B) the phosphate bonds in the nucleotide triphosphates that serve as substrates
C) the energy released when hydrogen bonds are broken as the DNA molecule is unwound
D) ATP only

Question

Quizplus · Accepted Answer

The energy for polymerization of nucleotides in the process of transcription comes from the high-energy phosphate bonds in the nucleotide triphosphates that serve as substrates for RNA polymerase. As each nucleotide is added to the growing RNA chain, two of the phosphate groups are cleaved off and the energy released is used to drive the reaction forward.

Which Molecule or Reaction Supplies the Energy for Polymerization of Nucleotides