Discussion
Which of the following is not a component of a basic biological control system ?
Answer: D
The item that is not a component is the disturbance generator.
A basic biological control system has a receptor (sensor) that detects the variable, a comparator or control centre that compares it with the set point, and an effector that acts to correct it. Body temperature control has skin and hypothalamic thermoreceptors, the hypothalamus as the integrator, and sweat glands and muscles as the effectors.
Disturbances, such as a cold environment, come from outside and are what the system resists. They are inputs to the system, not one of its parts.
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