Which of the following does not account for the gelatinous consistency of connective tissue ground substance?
A. Hyaluronic acid
B. Proteoglycans
C. Collagen
D. Glycosaminoglycans
E. Chondroitin sulfate
Answer: C
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Which of the following substances is absorbed into the blood capillaries of the intestinal villi?
a. amino acids b. fatty acids c. glycerol d. all of the above
All of the following remain in urine following secretion except which one?
A. Nitrogenous waste B. Excess hydrogen ions C. Water D. All of the answer choices remain in urine following secretion.
What response would you expect after traveling to high altitude for two weeks?
A. Blood levels of oxygen would remain depressed for the duration. B. A surge in iron release from the liver would occur. C. The kidneys would secrete elevated amounts of erythropoietin. D. There would be no change in blood composition.
Leptin administration may be helpful for treating a number of conditions. Given its actions, choose the appropriate clinical application for leptin.
A. Administering leptin should increase hunger in those with eating disorders, leading to greater food intake. B. Administering leptin will signal the hypothalamus to decrease metabolic rate, thereby allowing a thin individual to regain lost weight. C. Administering leptin will in turn increase ghrelin secretion in those who are leptin deficient. D. Administering leptin may help to restore menstrual cycles in women with insufficient adipose tissue.