____detect changes in pressure and convert this stimulus energy into ____
a. Thermoreceptors; action potentials
b. Mechanoreceptors; action potentials
c. Chemoreceptors; resting potentials
d. Photoreceptors; resting potentials
e. Osmoreceptors; threshold potentials
ANSWER: b
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Forming skill memories through repetition of an activity such as riding a bike, involves the ____, which controls motor activity
a. cerebellum b. medulla oblongata c. cerebrum d. hippocampus e. hypothalamus
Why are C4 plants able to photosynthesize with no apparent photorespiration?
A) They do not participate in the Calvin cycle. B) They use PEP carboxylase to initially fix CO2. C) They conserve water more efficiently. D) They exclude oxygen from their tissues.
When Homo sapiens first left Africa:
a. they were slaughtered by Homo neanderthalensis. b. they encountered Homo erectus in Java. c. they encountered Homo neanderthalensis in Southeast Asia. d. they were the only genus of Homo on earth. e. they headed east but not west.
What kind of phylogenetic tree shows relationships, but not lineage, between species?
What will be an ideal response?