A Protein Kinase Can Phosphorylate an Enzyme and Activate It

question 53

Multiple Choice

A protein kinase can phosphorylate an enzyme and activate it by

• A) changing the enzyme's function.
• B) increasing the number of enzyme molecules.
• C) decreasing the number of enzyme inhibitors.
• D) changing the shape of the enzyme to expose an active site.
• E) increasing transcription of the enzyme.

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Definitions:

Shaping

A method used in behavioral psychology to gradually teach new behaviors through the use of reinforcement for successive approximations to the desired behavior.

Discriminative Stimulus

A specific cue or stimulus in the environment that signals the availability of reinforcement or punishment, guiding behavior accordingly.

Reinforcement

In behavioral psychology, a stimulus that increases the probability of a behavior being repeated.

Operant Conditioning

A learning principle where behaviors are influenced by the consequences that follow, such as rewards or punishments.