The general term for disorder associated with decreased oxygen delivery by blood is ____
a. malaria
b. leukemia
c. mononucleosis
d. anemia
e. toxemia
ANSWER: d
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If individuals move from one population to another, it may cause a shift in allele frequencies due to
a. genetic drift. b. directional selection. c. natural selection. d. mutation. e. gene flow.
In a well-mixed estuary, river flow is ____ tidal currents
a. greater than b. less than c. perpendicular to d. equal to
All primates have both grasping feet and hands
except
a. humans. b. chimpanzees. c. new world monkeys. d. lemurs. e. old world monkeys
Each of the following is a voltage-gated Na+ channel property except
A) opens rapidly when stimulated. B) closes rapidly in absence of stimulus. C) opens to a variable extent depending on how much the stimulus voltage exceeds the threshold voltage. D) has a voltage sensor helix that controls channel gating. E) can be inactivated by the inactivating particle part of the channel protein.