Which mechanoreceptor(s) responds to light touch?
a. free nerve endings only
b. Pacinian corpuscle only
c. Ruffini endings only
d. free nerve endings and Meissner's corpuscle
e. Pacinian corpuscle and Ruffini endings
ANSWER: d
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An environment would be considered harsh to an organism if:
a. it would be difficult for the individual to maintain homeostasis. b. the temperatures are extreme. c. salinity varies. d. pressure gradients are large. e. light levels are low.
When Pavlov's dog salivated after hearing a bell, this exemplified
A. classical conditioning. B. operant conditioning. C. habituation. D. nonassociative learning.
Giardia lambia is a prokaryotic organism.
a. true b. false
A medically important protozoan is:
a) Staphlococcus aureus b) Giardia lamblia c) Candida albicans d) Clostridium tetani