The vestibular apparatus
a. controls balance.
b. consists of three fluid filled semi-circular
canals.
c. contains mechanoreceptors that detect fluid
shifts.
d. includes all of these.
e. includes b and c only
D
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Further evolution of the protostomes changed the coelom by
(a) losing it. (b) reducing it. (c) it becoming a pseudocoel. (d) all of the above.
Which organ in the human digestive system contains an oblique layer of muscle as a part of its
muscularis?
a. esophagus b. large intestine c. liver d. small intestine e. stomach
During photosynthesis, which of the following is the most important molecule in the conversion of light energy from the sun into chemical energy?
a) oxygen b) glucose c) chlorophyll d) water e) carotenoid
Phospholipid molecules that prevent the alveoli from collapsing are known as ________
A) laryngitis B) plasma C) surfactant D) mucus