Answers: 2
Biology, 22.06.2019 19:30, ciaotaylor
On a backpacking trip, kenny hikes all day at a steady pace, covering 30 kilometers and burning 4000 calories. at the school track, janelle runs the 100-meter sprint in 13.5 seconds, burning 10 calories. afterward, janelle’s leg muscles are aching and she is breathing hard, while kenny maintains normal breathing all day, even though he burns 400 times more calories than janelle. which two statements offer the best explanation for this phenomenon? a. if the aerobic pathway—cellular respiration—cannot meet the energy demand, then the anaerobic pathway—lactic acid fermentation—starts up, resulting in lactic acid buildup and "oxygen debt." b. aerobic cellular respiration produces more energy, but its use is limited because of lactic acid buildup in the muscles and the resulting "oxygen debt." c. after about 90 seconds of intense exercise, the muscles become depleted of oxygen, and anaerobic respiration can no longer function to produce atp, resulting in "oxygen debt." d. the rate of energy demand determines how the muscles will obtain energy, either from cellular respiration or from lactic acid fermentation if not enough oxygen is present.
Answers: 3
Biology, 22.06.2019 22:00, kprincess16r
The best instrument to use to separate the liquid portion from the solid portions in whole blood is a(an) a. compound light microscope. c. test tube. b. centrifuge. d. electron microscope.
Answers: 1
Biology, 23.06.2019 01:30, emilyturchon
Alternation of generations in angiosperms the diagram below illustrates the alternation of generations that is characteristic of the angiosperm life cycle. label structures and processes (using white labels), indicate whether different structures are haploid or diploid (using pink labels), and indicate the types of cell division that occur at different points in the life cycle (using blue labels). drag the labels to their appropriate locations on the diagram of the angiosperm life cycle. labels can be used once or more than once. use only white labels for white targets, pink labels for pink targets, and blue labels for blue targets. a. meiosisb. haploidc. mitosisd. ametophytee. pollinationf. meiosisg. haploidh. mitosisi. ametophytej. fertilizationk. zygotel. diploidm. sporophyte
Answers: 2
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