Facilitated diffusion
a. involves a carrier molecule.
b. requires energy expenditure.
c. is how water enters the cells.
d. both (a) and (c) above.
e. all of these answers.
A
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For a person whose hematocrit is 45%, in which choice below are the components of blood correctly ranked in order of decreasing percent volume?
A. WBCs, plasma, RBCs B. Plasma, WBCs, RBCs C. RBCs, WBCs, plasma D. Plasma, RBCs, WBCs E. WBCs, RBCs, plasma
During sympathetic activation, which of the following would not occur?
A) elevated heart rate B) elevated blood pressure C) increased sweating D) elevated blood glucose E) constriction of pupil
By the time filtrate reaches the tip of the loop of Henle, _____ of the filtrate volume has been reabsorbed
A. 65% B. 75% C. 80% D. 95% E. 100%
The upper limb and its girdle are attached rather loosely to the rest of the body. This arrangement
A. results in a disjointed appearance. B. results in a limited range of motion. C. allows a wide range of movements. D. restricts the amount of weight the upper limb can support. E. limits fine coordination of the hands.