Is this negative feedback or positive feedback? When a human increases physical activity, the amount of fuel burned in its
cells also increases, which in turn increases the concentration of dissolved
CO2 in the blood. The CO2 reacts with water in the blood to make a weak acid,
which lowers the pH of the blood, Sensory cells in the medulla of the brain
register this drop in pH and send signals to the diaphragm and heart to
increase respiration. This will clear the CO2 from the bloodstream.
Answers: 3
Biology, 21.06.2019 17:30
Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?
Answers: 1
Biology, 22.06.2019 13:20
Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing
Answers: 1
Biology, 22.06.2019 14:30
Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d
Answers: 1
Biology, 22.06.2019 15:00
Which of the following organisms are capable of self-fertilization? a.plants b.tigers c.humans
Answers: 2
Is this negative feedback or positive feedback? When a human increases physical activity, the amount...
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