Search results
Negative feedback could come up as an essay question in the exam so make sure you know several examples and can explain how each work! Control of Negative Feedback. Negative feedback loops help maintain a normal range or balance within an organism. They reduce the initial effect of the stimulus.
- Negative Feedback Definition
- Examples of Negative Feedback
- Quiz
Negative feedback is a type of regulation in biological systems in which the end product of a process in turn reduces the stimulus of that same process. Feedback, in general, is a regulatory mechanism present in many biological reactions. By allowing certain pathways to be turned off and on, the body can control various aspects of its internal envi...
Regulating Blood Sugar
Every time you eat, a negative feedback mechanism controls the level of sugar in your blood. The main sugar found in your blood is glucose. After you eat something, your body absorbs the glucose from your bloodstream and deposits it into your blood. This increases the concentration of glucose and stimulates you pancreas to release a chemical called insulin. Insulin is a cellular signaling molecule which tells muscle and liver cells to uptake glucose. Liver cells store the excess glucose as gl...
Temperature Regulation
All endothermsregulate their temperature. Endotherms are animals which regulate their bodies at a different temperature than the environment. You can think of mammals and birds as the most common endotherms. Most of the pathways responsible for temperature regulation are controlled by negative feedback. As the temperature rises, enzymes and pathways in the body are “turned-on”, and control various behaviors like sweating, panting and seeking shade. As the animal does these things, the tempera...
Filling a Toilet Tank
Many students tend to struggle with abstract biological examples of negative feedback. Have no fear! A simple and common house-hold item uses negative feedback every day. In the tank on the back of your toilet is a ball or float, which rests at water level. When you empty the tank, the water level drops. The pressure from the float that was holding the valve shut releases, and new water flows into the tank. The valve controlled by the float is like an enzyme that monitors the level of the pro...
1. Which of the following represents negative feedback? A. Blood platelets release chemicals that attract more blood platelets when then fill a wound B. One bird fleeing a predator spurs three birds, which in turn scares the whole flock C.In producing an amino acid, the enzyme a cell uses is inhibited after the amino acid reaches a specific concent...
Figure 1.3.2 – Negative Feedback Loop: In a negative feedback loop, a stimulus—a deviation from a set point—is resisted through a physiological process that returns the body to homeostasis. (a) A negative feedback loop has five basic parts. (b) Body temperature is regulated by negative feedback.
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
Negative feedback - example. Body temperature is controlled by the hypothalamus in the brain. If the hypothalamus detects that the body is too hot, the response is that the body begins to sweat...
Mar 28, 2024 · Definition of Negative Feedback. Negative feedback is a regulatory mechanism in biological systems where the final product of a process inhibits its own production, ensuring stability and homeostasis.
An example of negative feedback is the control of body temperature. If the body gets too hot, it begins to sweat to try to reduce the temperature. If the body gets too cold, it begins to...
People also ask
What is an example of negative feedback?
What is negative feedback in Physiology?
What is the difference between positive and negative feedback?
What is a negative feedback loop?
How does negative feedback affect homeostasis?
How does negative feedback work?
Negative feedback loops help maintain a normal range or balance within an organism. They reduce the initial effect of the stimulus. Receptors detect any deviations in a factor from the normal range; this results in a corrective mechanism to return the factor back to its normal range.
