The enzyme found in tears, saliva, and nasal secretions that acts to destroy bacteria is ________.
A. a lysozyme
B. an interferon
C. an antibody
D. All of these choices are correct.
Answer: A
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Regarding the citric acid cycle, which molecule participates in a complex reaction involving NAD and coenzyme A within the mitochondrion?
A) pyruvate B) citric acid C) ATP D) oxygen E) FADH2
Calculate the net filtration pressure (NFP) with a blood hydrostatic pressure of 40 mm Hg and a blood colloid osmotic pressure of 25 mm Hg. Then determine if filtration or reabsorption occurs. NFP = ________ and results in a fluid ________
A) 15 mm Hg; filtration B) 65 mm Hg; reabsorption C) 65 mm Hg; filtration D) 15 mm Hg; reabsorption E) -15 mm Hg; filtration
Which of the following is NOT true of plasma?
A. Plasma volume can change drastically. B. The color of plasma is yellow. C. Plasma is about 91% water. D. Plasma is a colloid.
Keratinized epithelium ________.
A. is a moist membrane B. allows water to diffuse through C. is a dry, mostly dead membrane D. has living cells in all layers