Question

explain why the following statements are false. a. feedback inhibition is defined as a mechanism of down-regulating enzyme activity by the accumulation of a product earlier in the pathway. b. protein phosphorylation is another way to alter the conformation of an enzyme and serves exclusively as a mechanism to increase enzyme activity.

Answer 1

False. Feedback inhibition occurs when an enzyme acting early in a pathway is inhibited by the accumulation of a product late in the pathway

What is inhibition ?

Inhibition is the conscious or unconscious restriction or restraint of a process or behavior, especially of urges or wants. The ability to inhibit oneself from acting on some impulses, such as the desire to hit someone in a fit of rage, and to delay the satisfaction of pleasurable activities allows one to perform vital social functions. When two desires are perceived that are in conflict, conscious suppression often occurs in daily life (e.g., the desire to eat a rich dessert versus the desire to lose weight).

According to psychoanalytic theory, inhibition serves as a mediator between the id and the superego, or conscience, and is largely unconscious (primitive desires). The socially imposed inhibitions known as taboos, such as those prohibiting incest or murder, are elevated to the level of moral prohibition.

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