bg
bg
bg
bg

GradePack

You’ve recently carried out an extensive extraction process…

You’ve recently carried out an extensive extraction process (fractionation) to isolate a new natural product from the leaves of the rare Sailfishius palmbeachifloridus found on the PBAU campus. The activity table for your experiment is shown here:  pH2 solvent pH2 aqueous pH9 solvent pH 9 aqueous + – + – Based on this information, answer the following questions: *** a) since the compound is not found in aqueous layers, the compound is: [blank2]  *** b) the UN-IONIZED form(s) of the compound are found in which layer(s)? [blank3] *** c) the unknown compound can be classified as: [blank4]  *** d) You want to make sure your assay is working, so you repeat the same experiment using a laboratory standard shown below. Complete the table below (e.g. enter symbols, “+” or “-“) to predict what layer(s) the standard is likely to be found in using the same extraction process. pH2 solvent pH2 aqueous pH9 solvent pH 9 aqueous [blank5] [blank6] [blank7] [blank8]  

 Read Details

Recall the discussion of Sugars and Artificial Sweeteners… R…

Recall the discussion of Sugars and Artificial Sweeteners… Refer to the structures shown here for the following “SUGAR” questions: *** a) Which of the “sugars” is absorbed INTACT into the body after an oral dose? [blank1] *** b) Which of the “sugars” is/are eliminated intact in the feces after an oral dose? [blank3] Why? [blank4] *** c) Which TWO sugars could be described as DISACCHARIDES? [blank5] (enter both in same blank) *** d) An oral dose of sucrose is converted to two monosaccharides called : [blank6] (enter both in same blank) *** e) The conversion of sucrose into two monosaccharides occurs in the body in the: [blank7] *** f) This conversion process described above is referred to as  [blank8] and leads to [blank9] (e.g. same or different)monomeric sugars found in high fructose corn syrup (HFCS). Consider the hydrolysis reaction of the sweetener aspartame (shown below) *** g) Hydrolysis of aspartame yields two amino acids…name them: (i) [blank10]; (ii) [blank11] *** h) If amino acid (ii) cannot be further converted to amino acid (iii), a patient may develop a disease called… [blank13] *** i) Persistent high levels of sugar in the blood can lead to the potentially toxic process of “glycation”.  This process involves the formation of a [blank14] bond between a sugar molecule and an endogenous protein. (choices: ionic or covalent) *** j) What are the approximate percentages of Fructose and Glucose in HFCS55? [blank15]

 Read Details