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Define the following terms:
a. solvation sphere
b. amphipathic
c. micelle
d. hydrophobic effect
e. clathrate
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- Given a stock protein solution with a concentration of 3 mg/ml, determine the protein concentration of a solution made by mixing 5 μl of the stock with 5 μl of a buffer.How does cholesterol affect membrane fluidity? Group of answer choices a. It tends to increase the fluidity b. It has no influence on membrane fluidity c. It tends to decrease membrane fluidityMannitol, a carbohydrate, is supplied as a 25% (w/v) solution. This hypertonic solution is given to patients who have sustained a head injury with associated brain swelling. (a) What volume should be given to provide a dose of 70. g? (b) How does the hypertonic mannitol benefi t brain swelling?
- Which of the following statements best explains the insolubility of lipids in water? a. The structure of lipids includes hydrophilic molecules. b. The polar portion of lipids is much larger than the nonpolar portion. c. The polar portion of lipids is much smaller than the nonpolar portion. d. The polar and nonpolar portions of lipids are of the same size.Which is NOT an appropriate factor in choosing solvents in a mixed solvent system? a. The two solvents must be inert. b. The two solvents must be immiscible. c. The solute must have varying solubility between the two solvents d. The solute must not react with the solventsMolarity is the ratio between: Select one: a. the number of moles of a solute and the volume of a solution b. the mass of a solute and the mass of a solution c. the volume of a solute and the volume of a solution. d. the number of moles of a solute and the mass of a solvent
- Define the following terms: a. hydrocarbon tails b. polar head c. dialyzing membrane d. van’t Hoff factor e. osmometerWhat is the definition of solute concentration? A. The total amount of solute inside a cell B. The total amount of solution inside and outside a cell C. The total amount of solvent in a solution D. The total amount of solute dissolved in a solventWhen analyzing urine from a patient with kidney disease, which organicmolecules might be detected? Explain. Which biochemical test will be the most appropriate for detection of those molecules?
- Which of the following is TRUE, if the protein pH is electrically neutral? Refer to the graph below. a. The denaturation of protein is lower than 100% b. The denaturation of protein is greater than 100% c. The protein is in native form d. The protein is completely denaturedRank the following in order of increasing solubility in water: a triacylglycerol, a diacylglycerol, and a monoacylglycerol, all containing only palmitic acid.Which of the following is FALSE when the concentration of the buffer solution was increased? a. The buffer will be effective in resisting pH changes. b. There will be more weak acid components that can neutralize the added base. c. The solution will have a higher buffer capacity. d. There will be more weak base components that can neutralize the added base.