You Have Duplicated the Threonine to Isoleucine Metabolic Pathway and Want

question 70

Multiple Choice

You have duplicated the threonine to isoleucine metabolic pathway and want to determine the saturation level of threonine.You slowly add increasing amounts of threonine and observe that the reaction rate initially increases slowly and then decreases.You also note that increasing the amount of isoleucine decreases the rate of the reaction.You determine that the pathway is thus regulated by

• A) feedback inhibition.
• B) a noncompetitive inhibitor.
• C) a competitive inhibitor.
• D) a coenzyme.
• E) a prosthetic.

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Definitions:

Appetite Problems

Issues related to eating habits, which can range from loss of appetite to overeating, potentially leading to health complications.

Mood Disturbances

Variations from a person's baseline mood, including disorders such as depression or bipolar disorder, affecting emotional states and behaviors.

Serotonin

A neurotransmitter involved in regulating mood, appetite, sleep, memory, and learning. Imbalances in serotonin are associated with depression and other mood disorders.

Endorphins

Natural, pain-killing chemicals released in the brain that also contribute to sensations of pleasure or well-being.