Death Cap Mushrooms Produce a Substance Called -Amanitin

question 22

Multiple Choice

Death cap mushrooms produce a substance called -amanitin.α-amanitin efficiently blocks synthesis of mRNA,but not of tRNA or rRNA in eukaryotic organisms.How is that possible?

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

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Definitions:

Price Mechanism

is the process by which the forces of supply and demand determine the price of goods and services in a market economy.

Circular Flow Model

An economic model illustrating the movement of goods, services, and money between households and businesses in an economy.

Demand

The desire and ability of consumers to purchase goods or services at given prices, playing a critical role in determining market prices and quantities.

Supply

The aggregate availability of a product or service for acquisition at a designated price.