An isotonic solution
A. has a greater concentration of impermeant solute than a cell.
B. has the same osmotic pressure as the cells in the solution.
C. has more water entering than leaving a cell.
D. causes a cell to shrink.
Answer: B
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Olfactory receptors are neurons.
Answer the following statement true (T) or false (F)
You have spent 24 hours traveling from the U.S to New Zealand, on quite a few airplanes with many stops. Because of the stress, changes in time zones, and short blocks of time between planes, you find yourself tired with a headache when you arrive. You are severely dehydrated. A hematocrit value of your blood would be ________ than normal because ________
A) lower; more red blood cells are being made by the bone marrow B) higher; you have less blood plasma volume C) lower; the bone marrow is making fewer red blood cells due to the latitude of the airplanes D) higher; more plasma proteins are made by the liver E) lower; you have less blood plasma volume
The epidural space is filled with cerebrospinal fluid (CSF).
Answer the following statement true (T) or false (F)
The conversion of ammonia into a less toxic substance produces
A) ketone bodies. B) urea. C) nitrate. D) acetyl-CoA. E) water.