Which is an example of negative feedback?Question 1Select one:a.lowering of blood glucose after a mealb.blood clotting after an injury.c.lactation during nursingd.uterine contractions during labore.all of the above
Question
Which is an example of negative feedback?Question 1Select one:a.lowering of blood glucose after a mealb.blood clotting after an injury.c.lactation during nursingd.uterine contractions during labore.all of the above
Solution
To determine which option is an example of negative feedback, let's analyze each one:
a. Lowering of blood glucose after a meal: This is an example of negative feedback. When blood glucose levels rise after eating, the body responds by releasing insulin, which helps lower blood glucose levels back to normal.
b. Blood clotting after an injury: This is an example of positive feedback. When an injury occurs, the process of blood clotting is accelerated to quickly form a clot and stop bleeding.
c. Lactation during nursing: This is an example of positive feedback. The more a baby nurses, the more milk is produced.
d. Uterine contractions during labor: This is an example of positive feedback. The contractions increase in intensity and frequency until the baby is born.
e. All of the above: This option is incorrect because not all the examples listed are instances of negative feedback.
Therefore, the correct answer is:
a. Lowering of blood glucose after a meal
Similar Questions
Which of these are examples of negative feedback?Question 8Select one or more:a.The use of sweating and shivering to bring body temperature back to the correct set point (37°C)b.Platelets producing chemical signals to attract more platelets to a wound during blood clotting.c.Regulation of blood glucose levels by production of insulin and glucagon.d.Regulation of blood salinity by production of ADH to adjust level of water retention by kidneys.e.Oxytocin stimulation of uterine contractions during childbirth..
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.
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
Classify each of these examples as a negative or a positive feedback loop and explain why.ScenarioNegative or positive feedback loop?ExplanationThe population of rabbits on an island increases. This causes the number of feral cats to increase because they have more food. As more rabbits are eaten, their population decreases again.
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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