When a person's blood sugar level changes, receptors in the body sense the change. If blood sugar is too high, the pancreas secretes insulin into the blood to lower the level. If blood sugar is too low, the liver releases glucose to raise the level.What type of feedback loop does this describe?A.Positive feedback loopB.Insulin feedback loopC.Glucose feedback loopdoneD.Negative feedback loop
Question
When a person's blood sugar level changes, receptors in the body sense the change. If blood sugar is too high, the pancreas secretes insulin into the blood to lower the level. If blood sugar is too low, the liver releases glucose to raise the level.What type of feedback loop does this describe?A.Positive feedback loopB.Insulin feedback loopC.Glucose feedback loopdoneD.Negative feedback loop
Solution
This describes a Negative feedback loop (D). In a negative feedback loop, the body senses a change and activates mechanisms to reverse that change, in order to maintain an optimal internal environment. In this case, if blood sugar is too high, insulin is released to lower it, and if it's too low, glucose is released to raise it. This constant adjustment to maintain balance is characteristic of a negative feedback loop.
Similar Questions
Which of the following is the best example of a positive feedback loop?Group of answer choicesTemperature regulationBlood clots following an injuryBlood glucose regulationpH regulationAll of these are examples of positive feedback
Consider whether the glucagon cycle in the diagram above is also an example of a negative feedback loop. Explain your answer by describing the steps in the glucagon cycle, similar to the description above of the insulin cycle.
Which of the following statements is true concerning feedback mechanisms? Which of the following statements is true concerning feedback mechanisms? Negative feedback mechanisms work to prevent sudden severe changes within the body. Positive feedback mechanisms always result in excessive damage to the host. Blood glucose levels are regulated by positive feedback mechanisms. Negative feedback mechanisms tend to increase the original stimulus.
An example of a positive feedback loop is:Group of answer choices Formation of a blood clotShivering due to muscle contraction in case of cold temperatureIncrease breathing after exercise to bring the blood oxygen level back up to normal.Maintenance of body temperature by sweating in hot summer.
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