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The way in which the velocity of an airplane is controlled can be thought of as an analogy for a negative-feedback control system in an organism.Suppose an airline pilot sets an aircraft's engines to produce a velocity of 450 mph,and measures that speed using an instrument on the outside of the plane.When another pilot reports turbulence ahead,the first pilot uses the throttle to change the velocity set point to 350 mph.
-According to this analogy,the instrument on the outside of the plane is providing
A) an error signal.
B) a set point.
C) an effector.
D) feedback.
E) homeostasis.

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Quizplus · Accepted Answer

The instrument on the outside of the plane provides feedback by measuring the actual speed, which is compared to the desired set point to adjust the velocity accordingly.

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