Osmosis does not occur if there is no concentration gradients for water and solutes on opposite sides of a semipermeable membrane
Indicate whether the statement is true or false
T
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The neurons bringing in sensory information to the central nervous system are
A. afferent neurons. B. efferent neurons. C. motor neurons. D. a and c E. b and c
The upper half of the esophagus contains smooth muscle and the lower half contains skeletal muscle
Indicate whether this statement is true or false.
The central opening in the eye through which the light passes on to the retina is the
A) lens. B) fovea. C) cornea. D) pupil. E) conjunctiva.
Which of the following is something antibodies do not do?
A) Link antigen molecules together B) Bind antigen molecules of two or more enemy cells and stick them together C) Bind to enemy cells, thus changing their shape so their complement-binding sites are exposed D) Neutralize antigens by binding to regions of an antigen that can be pathogenic E) Differentiate into memory antibodies, which upon reexposure to the same pathogen would mount a quicker attack