Asbestos is a material that was once used extensively in construction. One risk from working in a building that contains asbestos is the development of asbestosis caused by the inhalation of asbestos fibers. Cells will phagocytize asbestos, but are not able to degrade it. As a result, asbestos fibers accumulate in _____.
A) mitochondria
B) ribosomes
C) peroxisomes
D) lysosomes
D
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Which substance would have the most difficulty entering a water lattice?
a. table salt (NaCl) b. a nonpolar molecule c. a sodium ion d. a proton (H+) e. an electron
The ability to conjugate depends on the presence within the donor cell of a plasmid called the ____
a. X factor b. F factor c. C factor d. sex pilus e. S factor
What happens to a retinal photopigment when it captures a photon?
A. It releases an electron. B. It fluoresces. C. It changes shape. D. It begins to vibrate. E. It does nothing.
Gluconeogenesis is the anabolic process by which microorganisms create monosaccharides for biosynthesis. Which of the following is NOT required for the gluconeogenic pathway?
a) pyruvate b) NADH/NADPH c) CO2 d) ATP e) all of these are required for the synthesis of glucose