Which of the following describes a positive feedback loop?
When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar
concentration to a normal level.
When the body senses that the heart rate is very high, it secretes hormones that decrease the heart rate.
When blood sugar concentration is too high, the endocrine system secretes hormones that decrease blood sugar
concentration to a normal level.
O When someone is exercising intensely, the body secretes hormones that increase oxygen supply for cellular
respiration
Answers: 3
Biology, 22.06.2019 00:10
How does natural selection change thephenotypes within a population over time?
Answers: 1
Biology, 22.06.2019 01:50
Which statement best describes lactic acid fermentation? a. lactic acid fermentation is the first step of cellular respiration. o b. lactic acid fermentation is the final step of cellular respiration. re to berate c. in the absence of oxygen, cells release atp by breaking down lactose into glucose. e der lade res o d. in the absence of oxygen, cells release atp by breaking down glucose into lactate. ar
Answers: 1
Biology, 22.06.2019 12:40
Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.
Answers: 1
Which of the following describes a positive feedback loop?
When blood sugar concentration is too lo...
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