Which cells display CD4 proteins and interact with MHC Class II antigens?
a) Cytotoxic T cells
b) Helper T Cells
c) Memory T Cells
d) MHC antigens
e) B cells
b
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If a person is injected with a toxin that blocks acetylcholine receptors, which of the following will occur?
A. The sarcolemma will be constantly stimulated and muscles will continually contract. B. Spastic paralysis will result. C. The toxin will have no effect on muscle action. D. Stimulation of the sarcolemma will not be possible and muscles will be paralyzed. E. The person will develop myasthenia gravis.
A(n) ________________________________________ lamb is a young sheep less than 3 months old
Fill in the blank(s) with correct word
With a person standing upright, head rotation to the right will cause:
A. activation of hair cells in the left canal and right abducens nucleus B. activation of hair cells in the right canal and right abducens nucleus C. activation of hair cells in the left canal and left abducens nucleus D. activation of hair cells in the right canal and left abducens nucleus E. a vertical nystagmus
Bringing solutions into a cell is called
A. facilitated diffusion. B. pinocytosis. C. phagocytosis. D. exocytosis.