Consider how your body reacts when you consume a large amount of sugar. Is this response an example of positive or negative feedback? Explain your reasoning.

Biology · High School · Mon Jan 18 2021

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When you consume a large amount of sugar, your body reacts through a series of steps to regulate the blood sugar levels, primarily using negative feedback mechanisms. Here are those logical steps:

1. Ingestion of sugar: You consume foods or beverages high in sugar.

2. Blood sugar rises: The sugar enters your bloodstream, raising your blood sugar levels (this is known as hyperglycemia).

3. Insulin release: Your pancreas senses the rise in blood sugar and releases the hormone insulin.

4. Glucose uptake: Insulin signals body cells to take in glucose (sugar) from the bloodstream for energy or to store it for later use. This reduces the level of glucose in the blood.

5. Homeostasis restored: As blood sugar levels decrease back to a normal range, the release of insulin from the pancreas is reduced.

This process is an example of negative feedback because the response (release of insulin) acts to reduce the initial stimulus (high blood sugar levels). Negative feedback mechanisms are crucial in maintaining homeostasis, the stable and balanced conditions in the body.