Which of the following would be classified as a lipid?
A. catalase-an enzyme
B. alanine-an amino acid
C. starch-a polysaccharide
D. cholesterol-a steroid
E. sucrose-a disaccharide
D
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What kind of cells produce antibodies?
A. T cells B. B cells C. NK cells D. Neutrophils
The cusps (leaflets) of atrioventricular valves attach directly to
A) papillary muscles. B) trabeculae carneae. C) chordae tendineae. D) interatrial septa. E) coronary sulci.
In the following chemical reaction, what is NaCl?
NaOH + HCl ? NaCl + H2O
The three types of protein fibers found in connective tissue are
A. hyaluronic acid, collagen, and reticular fibers. B. collagen, elastin, and reticular fibers. C. chondronectic, osteonectin, fibronectin D. proteoglycan, elastin, and reticular fibers. E. proteoglycan, elastin, and hyaluronic acid.