Signals from the parasympathetic nervous system would cause a(n):
a. widening of pupils
b. increase in pulse rate
c. increase in digestive system movements
d. rise in blood sugar level
e. rise in metabolic rate
c
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Consider a living plant cell in a living leaf that has a higher water potential than the fluids surrounding
the cell. In such a situation there should be
a. a net flow of water out of the cell. b. gain of water by the cell only if the cell's pressure potential is high enough. c. no net flow of water into or out of the cell. d. a net flow of water into the cell. e. gain of water by the cell only if the cell's pressure potential is low enough.
Plasma membrane proteins might be involved
in
a. cell-to-cell recognition. b. signal recognition. c. transport of nutrients. d. metabolic activities. e. all of these
Which type of vessel is one cell layer in thickness?
a. artery b. arteriole c. capillary d. venule e. vein
Which one of the following types of tissues surrounds hollow organs that change shape or size regularly?
A) loose connective tissue B) dense connective tissue C) elastic connective tissue D) reticular connective tissue