A normal human urinary system consists of ____
a. two urethras
b. two ureters
c. two bladders
d. one kidney
e. one cloaca
ANSWER: b
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How might the removal of a wetland affect a nearby city?
A. Wetlands support a rich supply of nutrients, so the removal of a wetland would decrease the water quality. B. Wetlands reduce water quality, so the removal of a wetland would improve the water quality. C. Wetlands reduce flooding, so the removal of a wetland would increase the likelihood of the city flooding. D. Wetlands cause flooding, so the removal of a wetland would decrease the likelihood of the city flooding.
Most evidence indicates that skin color is controlled by how many gene pairs?
A. One B. Two to three C. Three to four D. Five to seven E. More than twelve
Which model in the accompanying figure would elicit an attack response from another male stickleback?
a. 1 and 2
b. 1, 2, 4, and 5
c. 2, 3, and 5
d. 1, 3, 4, 5, and 6
e. 1 through 6
If a cell is able to synthesize 30 ATP molecules for each molecule of glucose completely oxidized to carbon dioxide and water, approximately how many ATP molecules can the cell synthesize for each molecule of pyruvate oxidized to carbon dioxide and
water? A) 0 B) 12 C) 14 D) 26