Question

Which of the following is an accurate description of a positive feedback loop? SC.912.E.7.7

Answer 1

Regulatory functions such as feedback loops are very common in nature and happen thousands of times every day within our bodies alone.

A feedback loop is one of the methods by which biological organisms regulate functions. Feedback loops are a self-regulatory means through which the output of a system is then used as the input. Feedback loops can be of two types:

• Positive Feedback
• Negative Feedback

A positive feedback loop is one in which the system is stimulated to increase the production of a product. For example, the low levels of an enzyme in the blood will cause the body to produce more of that enzyme in a positive feedback loop. A negative feedback loop is just the opposite, in which high levels will cause a decrease in production.

Feedback loops are a vital part of maintaining homeostasis and for the survival of all organisms. Therefore, we can conclude that option D is correct in stating that feedback loops are common in nature and make the system stable.

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