An important mechanism that controls metabolic pathways under physiological conditions is
A)positive feedback.
B)signal transduction.
C)negative feedback.
D)genetic control.

Question

Quizplus · Accepted Answer

Negative feedback is the mechanism used to regulate metabolic pathways in response to changes in the environment. It involves the inhibition of the initial step of a pathway by one of the products of the pathway itself, thereby preventing an overabundance of the end product. This feedback mechanism maintains the homeostasis of the organism. A and D are incorrect because positive feedback and genetic control are not involved in the regulation of metabolic pathways in response to physiological conditions. B may be a mechanism that is involved in transmitting signals that affect metabolic pathways, but it is not a mechanism that controls those pathways.

An Important Mechanism That Controls Metabolic Pathways Under Physiological Conditions