More than 95 percent of the protein in a red blood cell is
A) albumin.
B) porphyrin.
C) hemoglobin.
D) immunoglobulin.
E) fibrinogen.
C
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When an acid such as HCl reacts with a base such as NaOH, the products are a salt (NaCl) and water (H2O). What term best describes this type of chemical reaction?
Which leukocytes are granulocytes?
A. c, d B. a, b, e C. b, d, e D. a, b, c E. a, b, e, f
When outdoor temperatures reached a ten-year high, the mountain hiker appeared flushed. Which action made her blood vessels get larger in diameter allowing her to lose heat to the environment?
A) Vasodilation B) Vasopressor C) Vasoconstriction D) Vasomotor
Binding of an excitatory neurotransmitter to a postsynaptic neuron causes
a. voltage-gated Na+ channels open b. voltage-gated K+ channels open c. chemically-gated Na+ channels open d. voltage-gated Cl- channels open e. chemically-gated Cl- channels open