2020/2021Test Bank Pathophysiology the Biologic Basis for Disease in Adults and Children 8th Edition
1. Which structure prevents water-soluble molecules from entering cells across the plasma membrane? a. Carbohydrate chains c. Membrane channel proteins b. Glycoprotein channels d. Lipid bilayer ANS: D The bilayer’s structure accounts for one of the essential functions of the plasma membrane. It is impermeable to most water-soluble molecules (molecules that dissolve in water) because the water-soluble molecules are insoluble in the oily core region. The bilayer serves as a barrier to the diffusion of water and hydrophilic substances while
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1 which component of the cell produces hydrogen peroxide h2o2 by using oxygen to remove hydrogen atoms from specific substrates in an oxidative reaction a lysosomes