Hematocrit approximately makes up what percent of the total blood volume?
a. 10 percent
b. 25 percent
c. 45 percent
d. 50 percent
e. 70 percent
C
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Antidiuretic hormone:
a. promotes processes that lead to an increase in the volume of urine b. makes the distal tubule and collecting ducts more permeable to water c. acts on the proximal tubules of nephrons in the kidney d. is produced by the adrenal cortex e. changes the water permeability of the ascending limb of the loop of Henle
Which of the following is an example of a special sense?
A. touch B. temperature C. pain D. vision E. position
In a close relationship, a change in one partner that results from a change in the other partner is termed ________.
A. antibiosis B. synergism C. coevolution D. mutualism E. symbiosis
Protecting the endangered whooping crane from extinction involved
A) captive breeding and reintroduction. B) collecting individuals from multiple small populations and combining them into a single large population. C) vaccinating the remaining population against plague. D) providing food during harsh winters.