Question

A feedback mechanism regulates the action of the
A. Hormones
B. Lipids
C. Cell division
D. None of the above

Answer 1

Hint: Human body has many mechanisms that help govern the body functions, this includes cells, tissues, organs, and glands. Regulating this causes the body to be in a steady state at all times.

Complete answer:
The feedback mechanism is a mechanism of the body to keep the quantities of hormones in the body within the optimal limits. The feedback mechanism gets triggered by an increase or decrease in the levels of the hormones. For example, if a person has more sugar in his blood, pancreatic cells will detect it. As a result, more insulin would be secreted to oxidize increased sugar. Insulin secretion will be decreased as the amount of blood sugar level will decrease in the body.
There are two kinds of feedback mechanisms in the body: positive feedback mechanism and negative feedback mechanism.
If there is a change in the natural state, then a message is sent to ‘increase’ secretion if there is a decline below natural or to ‘ decrease’ if there is a spike above normal to restore the normal body state. Such a mechanism is known as a negative feedback mechanism. Positive feedback mechanisms occur when some product feeds back (give message) to maximize its own production. It allows situations to become increasingly extreme.

So, the correct answer is 'Hormone'.

Note: Most hormones are driven by negative feedback, in which the hormone feeds back to decrease the production of its own. Whenever things tend to get too extreme, this form of feedback gets things back to normal. Positive feedback is less common as it allows situations to become more severe.