Question:
Hypophosphatemia is one of the few genetic disorders caused by a dominant allele
ca...
Question:
Hypophosphatemia is one of the few genetic disorders caused by a dominant allele
carried on the X chromosome. It causes a severe deficiency of phosphate ions in the
blood.
A female with hypophosphatemia whose father had the disease but whose mother
did not will likely transmit the disorder to:
Selection:
- her sons and daughters equally
- her daughters only
her sons only
- all of her daughters and 50% of her sons.
Answers: 1
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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
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