If Cells Are Grown in a Medium Containing Radioactive 15N

question 86

Multiple Choice

If cells are grown in a medium containing radioactive 15N, which of these molecules will be labeled?

• A) fatty acids only
• B) nucleic acids only
• C) proteins only
• D) both fatty acids and proteins
• E) both proteins and nucleic acids

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Definitions:

Fixed-Ratio Reinforcement

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

Variable-Interval Reinforcement

A schedule of reinforcement where responses are rewarded after unpredictable intervals of time, enhancing response rates and resistance to extinction.

Fixed-Interval Reinforcement

A schedule in operant conditioning where rewards are provided after a specified time period has elapsed, regardless of the behavior exhibited.

Variable-Interval Reinforcement

A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, which increases the consistency of the response.