Membrane attack complexes (MAC) form holes in attacked cells causing them to burst; this is a result of ________
A) interferon
B) complement fixation
C) natural killer cells
D) keratin
E) phagocytes
B
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Which phase of swallowing begins with compression of the bolus against the hard palate?
A) esophageal B) gastric C) buccal D) pharyngeal E) duodenal
List the primary germ layers formed by gastrulation. What tissues will they form in the adult?
What will be an ideal response?
Tonsils
A. increase in size in adults. B. are located in both the oral and abdominal cavities. C. provide protection against bacteria entering the oral and nasal cavities. D. contain red pulp and white pulp. E. are not functional in children.
When a red flower crossed with a white flower produces a pink flower, which of the following is demonstrated?
a) pleiotropy b) polygenic inheritance c) incomplete dominance d) codominance