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Home Q & A Board Biology-Related Homework Help General Biology
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JohanaT16 JohanaT16
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6 years ago
During the process of gas exchange, gases move ____.
  a. by active transport
  b. down electrical gradients
  c. through membrane channels
  d. by facilitated diffusion
  e. down partial pressure gradients

Question 2

At sea level, what is the partial pressure (mm Hg) of oxygen in the air we breathe?
  a. 21
  b. 50
  c. 100
  d. 160
  e. 540
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berrytartsberrytarts
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JohanaT16 Author
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6 years ago
Thanks
fgarza2146
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Yesterday
Helped a lot
foxrcng11
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2 hours ago
Smart ... Thanks!
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