You Incubate Eukaryotic Cells for 30 Minutes in [³H]uridine and Then

question 91

Multiple Choice

You incubate eukaryotic cells for 30 minutes in [³H]uridine and then immediately kill the cells and extract the RNA. Where does the radiolabel appear after this experiment?

• A)in larger molecular weight RNAs in the nucleus
• B)in smaller molecular weight RNAs in the mitochondria
• C)in smaller molecular weight RNAs in the cytoplasm
• D)in larger molecular weight RNAs in the mitochondria
• E)in moderately sized RNAs in the Golgi complex

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Definitions:

Variable Ratio

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses, making it highly resistant to extinction.

Fixed Ratio

A schedule of reinforcement where a response is reinforced only after a specified number of responses have occurred.

Variable Interval

A schedule in operant conditioning where a response is rewarded after an unpredictable amount of time has passed.

Premack Principle

A theory that more probable behaviors can reinforce less probable behaviors.