The Best Description of How Allosteric Regulation Works Is That

question 84

Multiple Choice

The best description of how allosteric regulation works is that a ligand __________ the transcriptional regulatory protein,which __________ the protein's affinity for DNA.

• A) covalently modifies; increases
• B) covalently modifies; decreases
• C) binds to; causes conformational changes that affect
• D) binds to; causes conformational changes that can only decrease

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Definitions:

Variable Ratio

A reinforcement schedule where a response is reinforced after an unpredictable number of responses, leading to high and steady response rates.

Fixed Ratio

A schedule of reinforcement where a response is rewarded only after a specified number of responses, in behavioral psychology.

Variable Ratio

A reinforcement schedule that rewards a response after a random number of responses, making it very resistant to being extinguished.

Fixed Interval

A schedule of reinforcement where the first response is rewarded only after a specified amount of time has elapsed, leading to a pattern of response immediately after the interval passes.