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- “The processes of life require a wide variety of ions and molecules tobe close to each other and be soluble in a common medium”. discuss the importance and application ofthis statement in linking the unique properties of water (as universalintracellular and extracellular medium) to the dissolution and absorption ofdrugs in the body.Some cells lining tubules in the kidneymaintain normal cell volume bysynthesizing organic solutes. Where inthe kidney would you expect to findthese cells? Explain.You take a bottle of soft drink out of your refrigerator. Thecontents are liquid and stay liquid, even when you shakethem. Presently, you remove the cap and the liquid freezessolid. Offer a possible explanation for this observation.
- Some antacids are used by dropping a tablet into a glass of water, which results in significant fizzing, and then drinking the water. Is there any evidence to suggest there might be a chemical reaction involved? What is the evidence?Osmosis Define osmosis and why does blood cell become clear in distilled water?Although both sugar and salt are soluble in water, the way in which they dissolve is different. Explain how their dissolving process is different, and elaborate why these differences exist.
- What are the possible effects of taking multivitamin tablets to your overall health? Explain in terms of biochemistry.Which of the following classes of compounds are biological surfactants and one of the main components of cell membranes?Which of the following statements are acceptable and why? [Whereas all the carbohydrate in the plasma membrane faces outward on the external surface of the cell, all the carbohydrate on internal membranes faces toward the cytosol.] [Although lipid molecules are free to diffuse in the plane of the bilayer, they cannot flip-flop across the bilayer unless enzyme catalysts called phospholipid translocators are present in the membrane.]
- Acid mine drainage is in part a chemical process and in part abiological process. Discuss the chemistry and microbiologythat lead up to acid mine drainage and point out the keyreactions that are biological. What ways can you think of toprevent acid mine drainage? How might you prevent furthergeneration of acid drainage?Describe the effects of a lethal dose of ionizingradiation at the molecular level. What type of filterwould be used to filter sterilize a heat-sensitive liquid?What kind of substances will be expected to be hydrophilic andhydrophobic, and what makes them so?