Multiple Choice
Which of the following is an example of a negative feedback mechanism in the human body?
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1. Introduction to Anatomy & Physiology
Feedback Loops: Negative Feedback
Multiple Choice
Which type of inhibition is typically regulated by negative feedback in physiological processes?
A
Feedback inhibition
B
Competitive inhibition
C
Allosteric inhibition
D
Non-competitive inhibition
Verified step by step guidance1
Understand the concept of feedback inhibition: Feedback inhibition is a regulatory mechanism where the end product of a metabolic pathway inhibits an enzyme involved in its synthesis, thus controlling the pathway's activity.
Identify the role of competitive inhibition: In competitive inhibition, an inhibitor competes with the substrate for binding to the active site of an enzyme, which can be overcome by increasing substrate concentration.
Explore allosteric inhibition: Allosteric inhibition involves an inhibitor binding to a site other than the active site, causing a conformational change in the enzyme that reduces its activity.
Examine non-competitive inhibition: Non-competitive inhibition occurs when an inhibitor binds to an enzyme at a site other than the active site, reducing the enzyme's activity regardless of substrate concentration.
Relate feedback inhibition to physiological processes: In physiological processes, feedback inhibition is a common mechanism for maintaining homeostasis by regulating enzyme activity through the end product of a pathway, often involving allosteric sites.
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