Which of the following is NOT a major constituent of bile?
A. Urea
B. Lecithin
C. Bilirubin
D. Cholesterol
Answer: A
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Which choice best distinguishes between mitosis and meiosis?
A. Mitosis produces sex cells that are genetically identical to the parent cell, whereas meiosis produces somatic cells that are genetically different from the parent cell. B. Mitosis produces sex cells that are genetically different from the parent cell, whereas meiosis produces somatic cells that are genetically identical to the parent cell. C. Mitosis produces somatic cells that are genetically identical to the parent cell, whereas meiosis produces sex cells that are genetically different from the parent cell. D. Mitosis produces somatic cells that are genetically different from the parent cell, whereas meiosis produces sex cells that are genetically identical to the parent cell.
Bones are constantly undergoing resorption for various reasons. Which of the following cells accomplishes this process?
A) osteoclast B) osteocyte C) osteoblast D) stem cell
Which activity below is not a respiratory event?
a. carbon dioxide is exchanged in the alveoli. b. cells produce nitrogen by their metabolism. c. gas exchange between tissues and the blood. d. oxygen is exchanged in the alveoli. e. pulmonary ventilation.
The inner membrane of a mitochondrion contains the protein ________, which harnesses the energy created by H+ flow to produce ATP by a process called ________
A) ATP synthase; oxidation B) enzyme complex; proton pumping C) cytochrome c; reduction D) ATP synthase; the chemiosmotic mechanism E) enzyme complex; reduction