CHMB62H3 Chapter 9: Chap 9 Questions .docx
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Account for the origin of the term carbohydrate: diversity. Assume that each sugar is in its pyranose form. Compare this number with the number of tripeptides that can be made from three different amino acids: couples. The specific rotations of the and anomers of d- glucose are +112 degrees and +18. 7 degrees, respectively. Specific rotation, [ ]d, is defined as the observed rotation of light of wavelength. 589 nm (the d line of a sodium lamp) passing through 10 cm of a 1 g ml-1 solution of a sample. When a crystalline sample of -d- glucopyranose is dissolved in water, the specific rotation decreases from 112 degrees to an equilibrium value of 52. 7 degrees. Assume that the concentration of the open-chain form is negligible: telltale marker. Glucose reacts slowly with hemoglobin and other proteins to form covalent compounds. What is the nature of the adduct formed: periodate cleavage.
