The best description of the two components of blood is
A. white blood cells and red blood cells.
B. formed elements and plasma.
C. formed elements and platelets.
D. red blood cells and plasma.
E. platelets and plasma.
Answer: B
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The human leukocyte antigen genes are on the
A) short arm of chromosome 6. B) long arm of chromosome 18. C) short arm of chromosome 2. D) long arm of chromosome 6.
The binding of a neurotransmitter to ligand-gated K+ channels will cause ____ in the postsynaptic
membrane.
a. depolarization b. hyperpolarization c. repolarization d. apolarization e. depolarization and repolarization
Which of the following does NOT describe
some aspect of polysaccharides? a. energy storage b. straight or branched chain c. glucose subunits d. contain only carbon, hydrogen, and oxygen atoms e. produced by condensation reactions
Which of the following statements about birdsong is
false? a. It is an instinctive behavior. b. The bird nervous system is prewired to recognize the species song. c. Laboratory-raised, isolated white crown sparrows tend to learn their tutor’s song. d. Rendition of the species song is influenced by acoustic input during a sensitive period. e. All of these are true.