The neurotransmitter GABA:
A. is stored in large electron-dense vesicles
B. is the major excitatory transmitter in the brain
C. when released acts mainly at the immediate postsynaptic membrane
D. binds to only ionotropic receptors
ANS: C
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Identify the following
The middle and inner ear are housed within the ________ bone.
A. frontal B. maxillary C. occipital D. temporal E. sphenoid
The reproductive system is the only system that is NOT essential to which aspect of life?
a. the life of the individual (although its activities do affect other systems) b. maintaining homeostasis c. the continuance of the species from one generation to another d. none of the above
What is true about protein hormones?
A. They can bind anywhere on the cell membrane. B. They must bind to receptors on the cell membrane. C. They can bind anywhere within the cell. D. None of these answers are correct.