AP BIOLOGY

THE CELL

CELL COMMUNICATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the point of a feedback loop?
A
To provide the body with more energy
B
To provide the body with more food
C
To make sure the conditions in the body are always changing
D
To make sure the conditions in the body remain stable
Explanation: 

Detailed explanation-1: -Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment. Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points.

Detailed explanation-2: -Feedback Loops can enhance or buffer changes that occur in a system. Positive feedback loops enhance or amplify changes; this tends to move a system away from its equilibrium state and make it more unstable.

Detailed explanation-3: -In economics, an example of a feedback loop is a company that reinvests sales revenue to generate even more income. In customer experience, a customer feedback loop refers to a business strategy where product developers use customer opinion to determine future actions.

Detailed explanation-4: -Negative Feedback. In a negative feedback loop, feedback serves to reduce an excessive response and keep a variable within the normal range. Examples of processes controlled by negative feedback include body temperature regulation and control of blood glucose.

Detailed explanation-5: -Negative feedback loops play an important role in regulating health in the human body. Also known as an inhibitory loop, a negative feedback loop allows the body to regulate itself. The process starts when there is an increase in output from a body system, which results in higher levels of certain proteins or hormones.

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