The concentration at which all of the carriers in renal tubules for a given substance are saturated is the
A) tubular maximum.
B) hydrostatic threshold.
C) blood colloid maximum.
D) osmotic pressure.
E) renal threshold.
A
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A) widen. B) become narrower. C) increase slowly. D) accelerate rapidly, but mostly in thickness. E) are hardly affected.
During sleep, the metabolic rate is ________ and the number of respirations _________.
A) low, increases B) high, decreases C) low, decreases D) high, increases
Which of the following statements regarding the diffusion of a nonpolar solute X across a cell membrane is correct?
A. At equilibrium, the net flux of X across the cell membrane is zero. B. Solute X will reach equilibrium, but the concentration will be much higher on the inside of the cell because of the smaller volume. C. Solute X will be unable to reach equilibrium because it is nonpolar. D. At equilibrium, X will cease moving across the cell membrane. E. At equilibrium, movement of X across the membrane will be much faster in one direction than in the other.
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A) filtration B) active transport C) osmosis D) cotransport with sodium ions