One critical function of chondroitin sulfate is to act as a lubricant in skeletal joints by creating a gel-like medium that is resilient to friction and shock. This function seems to be related to a distinctive property of chondroitin sulfate: the volume occupied by the molecule is much greater in solution than in the dehydrated solid. Why is the volume so much larger in solution?

Q: Why is the ionic bond between, say, the side chain of lysine and the side chain of glutamic acid…

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A:

Q: pH 1.0; Predict which structure of glycine might be dominant at pH 7.0 and pH 12.0. The pKa value of…

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Q: Which of these compounds is most soluble in water at pH 7.0? (Note that the non- ionized forms are…

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Q: The pKas of two hypothetical organic acids are given below: ACOOH ----> ACOO- + H+ (pKa = 4.15)…

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Q: 75 mL of 0.2 M NaOH were added to 100 mL of 0.1M aspartate solution, pH=pl. What is the new pH? pKa…

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Q: Beyond the differences in molecular mass, what is different about determining the molarity of a…

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Q: The diffusion constant for glucose in water is 0.70 ✕ 10−5 cm2/s. About how much time would it take…

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Q: direction of water flow across the membrane

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Q: Because oleic acid contains a hydrophilic and a hydrophobic end, why is this so important?

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Q: Describe the chemistry involved in the processes of Lipid Interesterification and Lipid…

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Q: Which noncovalent interactions (discussed in Section 8.2) are responsible for the cohesion of lipid…

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