Biology, 30.06.2019 16:30 kmontello5
Phloem cells are a. dead at maturity and are used to transport water from the roots to the rest of the plant b. dead at maturity and are used to transport sugars throughout the plant c. alive at maturity and are used to transport water from the roots to the rest of the plant d. alive at maturity and are used to transport sugars throughout the plant
Answers: 1
Biology, 22.06.2019 09:10
In general, are there any major differences that you can see? explain
Answers: 3
Biology, 22.06.2019 11:30
What would most likely happen if green plants were exposed to longer days of sunlight? a. the mitochondria would produce less energy . b. the chloroplasts would produce more energy. c. the cell wall would become thicker. d. the vacuoles would quickly shrink.b. the chloroplasts would produce more energy.
Answers: 3
Biology, 22.06.2019 19:30
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
Phloem cells are a. dead at maturity and are used to transport water from the roots to the rest of...
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