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14 Nov 2019
iPad令 9:21 PM 1. Which of the following is nor a function of membranes? A) define cell boundaries B) compartmentalization C) information storage D) regulation of transport E) cell-cell communication 2. Which of the following molecules would nor readily cross an intact cell membrane by simple diffusion? A) glucose B) water C) oxygen D) fatty acids E) ethanol 3. With regard to the semipermeable nature of the plasma membrane, which of the following would readily cross without the aid of a transport protein? A) DNA B) glucose C) calcium ions D) amino acids E) water 4. With respect to the outer and inner faces of the lipid bilayer of the cell membrane, the composition of lipids is A) identical. B) asymmetrical. C) not identical but symmetrical. D) highly random and varies throughout the cell E) a mirror image 5. Of the following lipids, which is found in approximately equal amounts in both the outer and inner portions of the lipid bilayer? A) cholesterol B) glycolipid D) phophatidylethanolamine E) phophatidylinositol 6, Based on your knowledge of the chemistry of the cell membrane, which of the following compounds would you couple with a new drug in order to achieve better uptake by cells of the drug? B) polar amino acids C) lipids
iPad令 9:21 PM 1. Which of the following is nor a function of membranes? A) define cell boundaries B) compartmentalization C) information storage D) regulation of transport E) cell-cell communication 2. Which of the following molecules would nor readily cross an intact cell membrane by simple diffusion? A) glucose B) water C) oxygen D) fatty acids E) ethanol 3. With regard to the semipermeable nature of the plasma membrane, which of the following would readily cross without the aid of a transport protein? A) DNA B) glucose C) calcium ions D) amino acids E) water 4. With respect to the outer and inner faces of the lipid bilayer of the cell membrane, the composition of lipids is A) identical. B) asymmetrical. C) not identical but symmetrical. D) highly random and varies throughout the cell E) a mirror image 5. Of the following lipids, which is found in approximately equal amounts in both the outer and inner portions of the lipid bilayer? A) cholesterol B) glycolipid D) phophatidylethanolamine E) phophatidylinositol 6, Based on your knowledge of the chemistry of the cell membrane, which of the following compounds would you couple with a new drug in order to achieve better uptake by cells of the drug? B) polar amino acids C) lipids
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