easy · MCAT bio-biochem
A 70 kg athlete consumes a meal, leading to a rise in blood glucose. In response, the pancreas releases insulin to facilitate glucose uptake into cells. This mechanism is an example of:
- Positive feedback, because the release of insulin amplifies the metabolic rate.
- Feedforward regulation, because the body anticipates the rise in glucose before digestion.
- Negative feedback, because the response opposes the initial stimulus of high blood sugar.
- Homeostatic failure, because the blood glucose should never fluctuate.
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