What do alpha cells of the pancreas secrete?
A. Somatostatin
B. Pancreatic polypeptide
C. Glucagon
D. Insulin
E. Gastrin
C. Glucagon
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Wharton's jelly is a form of
A) Marfan's syndrome. B) mucous connective tissue. C) ground substance. D) collagen fiber. E) embryonic epithelium.
Which is a correct listing of the hierarchy of a skeletal muscle's components, beginning with the smallest?
a: Myofibrils b: Muscle fiber c: Fascicle d: Skeletal muscle A. a, b, c, d B. a, c, b, d C. d, c, b, a D. c, b, a, d E. b, c, a, d
In genomic imprinting
A. a trait affects a structure found only in one sex. B. genes on the Y chromosome are only expressed in males. C. the same allele has a different effect if inherited from the mother or father. D. children copy their parents' behavior.
White blood cells engulf foreign particles by means of ________.
A. prestocytosis B. phagocytosis C. exocytosis D. macrocytosis E. pinocytosis