The organ of the vertebrate body with the largest
surface area is the
a. lung.
b. liver.
c. stomach.
d. skin.
e. brain.
Answer: d
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Killing of graft cells occurs through a complex series of mechanisms including
A. sensitized T cytotoxic cells. B. NK cells. C. erythrocytic cells. D. basophilic cells. E. sensitized T cytotoxic cells AND NK cells.
Which statement best describes type 1 diabetes?
a. Near normal insulin levels are maintained. b. Beta cells are hyperactive. c. It is the more common form of diabetes. d. It is thought to be an autoimmune disease. e. It often occurs as a result of obesity.
The bones that surround and protect the brain are collectively called the
a. spinal cord. b. vertebral column. c. pelvic girdle. d. cranium.
Parasites always complete their life cycle in a single host species
Indicate whether the statement is true or false