Blood as it enters the lungs has a high concentration of carbon dioxide and a low concentration of oxygen. The blood leaves the lungs with a high concentration of oxygen and a low concentration of carbon dioxide. What are the qualitative concentration gradients of CO2 and O2 in the lungs?
What will be an ideal response?
Qualitatively, the concentration gradient of oxygen is high, measured from the returning
blood to the lungs, while the concentration gradient for carbon dioxide is negative.
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When polyethylene is melted, the only bonds that are broken are the weak ______________ bonds between the long-chain molecules.
Fill in the blank(s) with the appropriate word(s).
A room in a house has a floor area of 160 ft2 . Which of the following is most likely the approximate volume of the room?
a. 4000 m3 c. 40 m3 b. 400 m3 d. 4 m3
A 160 lb person has a mass of 160/32 = 5 slugs. A 160 lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios. The elevator is accelerating downwards at 2 ft/s2
a. 150 lb c. 170 lb b. 160 lb d. none of the above
The gauge pressure of the water in a swimming pool at 10 ft is __________ the gauge pressure of the water at 5 ft
Fill in the blank(s) with correct word