Leukopoiesis begins with the differentiation of ________.
A. pluripotent stem cells
B. colony-forming units
C. myeloblasts
D. precursor cells
E. lymphoblasts
Answer: A
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Molecule X is some sort of chemical messenger. Its receptor resides within the nucleus and once the receptor is bound to X, gene transcription occurs. Molecule X might be a(n)
A. ion. B. hydrophilic protein. C. large protein. D. hydrophilic carbohydrate. E. lipid/steroid.
One of the hallmarks of Graves disease is
A. decreased appetite. B. weight gain. C. increased thirst. D. goiter.
Students were asked to identify the type of muscle tissue that makes up the arrector pili, a structure that moves the hair relative to the skin. Which of the following correctly identified the muscle tissue type?
A. Hannah stated that it is skeletal muscle, eliminating cardiac muscle because it is not located in the heart and smooth muscle because it is not part of blood vessels. B. David stated that it is smooth muscle, eliminating cardiac muscle because the tissue is not located in the heart and skeletal muscle because it is not under voluntary control. C. Sally stated that it is cardiac muscle, eliminating smooth muscle because it is not associated with blood vessels and skeletal muscle because it is not attached to bones.
Which of the following nutrients is absorbed by the lacteals of the small intestine?
A. Water-soluble vitamins B. Triglycerides C. Glucose D. Minerals E. Amino acids