Death Cap Mushrooms Produce a Substance Called Alpha-Amanitin

question 14

Multiple Choice

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.How is that possible?

• A)Alpha-amanitin efficiently interferes with the action of RNA polymerase I,but not RNA polymerase II or III.
• B)Alpha-amanitin efficiently interferes with RNA polymerase III,but not RNA polymerase I and II.
• C)Alpha-amanitin efficiently blocks the action of one or more basic transcription factors.
• D)Alpha-amanitin efficiently interferes with the action of RNA polymerase II,but not RNA polymerase I or III.

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