What is negative feedback in terms of homeostasis?
To regulate a number of processes in the body, there needs to first be recognition of current levels in order to respond in the appropriate way. For example there is a temperature "norm" (~36.9°C), if this level is detected to be too high by the hypothalamus, a corrective mechanism will be triggered to lower it, and if the level is detected to be too low, a corrective mechanism will be triggered to higher it. Positive feedback, on the other hand, is when a high level of something triggers the body to increase it even further.
CD
Related Biology A Level answers
All answers ▸What is the role of the rough endoplasmic reticulum and the Golgi apparatus in protein transport within cells?
Sometimes, babies are born with a hole between the right and left ventricles of their heart. Why does this mean oxygenated blood cannot get around their bodies?
Explain the structure of a Protein and how this can relate to its function.
Explain why biological enzymes would stop working at temperatures higher than 45 degrees Celcius.