What type of blood vessel returns blood to the heart?
a. artery
b. vein
c. capil...
Answers: 1
Biology, 21.06.2019 23:00
Classify the structures as homologous or analogous, depending on their structure and function.
Answers: 1
Biology, 22.06.2019 08:00
In which state was more than 100 billion tons of coal mined in 2005?
Answers: 1
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, janelleâs 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 pathwayâcellular respirationâcannot meet the energy demand, then the anaerobic pathwayâlactic acid fermentationâstarts 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
Mathematics, 24.03.2020 03:24
Mathematics, 24.03.2020 03:24
Biology, 24.03.2020 03:24
Mathematics, 24.03.2020 03:24
Mathematics, 24.03.2020 03:24
History, 24.03.2020 03:24
Mathematics, 24.03.2020 03:24