Death cap mushrooms produce a substance called alpha-amanitin. Alpha-amanitin efficiently blocks synthesis of mRNA, but not of tRNA or rRNA, in eukaryotic organisms. This is possible because alpha-amanitin efficiently interferes with ________.
A) the action of RNA polymerase I, but not RNA polymerase II or III
B) RNA polymerase III, but not RNA polymerase I and II
C) the action of RNA polymerases I and II, but not RNA polymerase III
D) the action of RNA polymerase II, but not RNA polymerase I or III

Question

Quizplus · Accepted Answer

Alpha-amanitin efficiently interferes with the action of RNA polymerase II, but not RNA polymerase I or III, leading to the blockage of mRNA synthesis in eukaryotic organisms.

Death Cap Mushrooms Produce a Substance Called Alpha-Amanitin