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- Lauric acid, a 20-C saturated fatty acid. Use only 1 mole:1. How many rounds of beta-oxidation are needed to oxidize the fatty acid? Show your solution.Tridecane [CH3(CH2)11CH3] is a major component of the repellent that the stink bug Piezodonis guildinii releases from its scent glands when attacked. What fatty acid gives tridecane on decarboxylation?topic: ISOLATION AND CHARACTERIZATION OF CARBOHYDRATES 1. Erythrose is an aldoterose. Describe the result when it is subjected to each of the following tests:a. Molisch’s Testb. Barfoed’s Testc. Benedict’s Testd. Seliwanoff’s Test2. Illustrate the reaction and identify the principle involved in the Nelson test.
- Fehling's Test: Some sources say that Fehling's test will be positive only for Aldoses not for ketose. But since Fehlings is a test for reducing sugars, Monosaccharide Ketose (and some disaccharide ketose) should test positive as well right? How about Ribose, based on our experimental result, it was negative. But theoretically, it should test positive right? Kindly explain the theoretical reaction of Ribose to Fehling's reagent.C. Mucic Acid Test for Galactose and Lactose Galactose, on being oxidized with HNO3 forms mucic acid, an isomer of saccharic acid. Mucic is insoluble andforms characteristic sandy crystals which serve to identify galactose. Examine the crystals under the microscope. Describe the appearance of a few typical crystals.Degradation of normal glycogen results to 97.2% glucose 1-phosphate and 7.2% glucose.Assuming a ratio of glucose 1-phosphate to glucose recorded in a glycogen sample from a patient with a liver disease was 100, The probable structure of the patient’s glycogen is________
- Please state if the statements are true or false.1. When fructose forms its Haworth projection, it usually assumes a pyranose structure2. The conversion of 1 mole aplha-ketoglutarate to 1 mole succinyl CoA produces 2 moles of carbon dioxideFor Melibiulose explain and show all of the steps that are different in its metabolization compared to the glycolysis of glucose. Be sure to identify the enzyme that can break down the glycosidic bond, explain how fructose and galactose will be used.Trend observed in graph and conclusion about the effect of temperature on enzyme activity. i) include a concise description of the trend observed in the graph shown in question 3 above, and explain this trend using the language presented in this unit and your biochemical knowledge of enzymes and reactions. In your conclusion, provide a logical argument supported by molecular theory that would explain any change observed in enzyme activity.
- 4.Pepsin is the proteolytic enzyme of gastric juice. The active form of this enzyme is formed from pepsinogen under HCL action.Optimum of enzyme action: pH = 1.5, t = 37°. Describe the properties of this enzyme. For this:1)Name and explain the mechanism of this enzyme activation.2)Draw the plot and explain the effects of pH and t on the reaction velocity.3) Explain how changes the velocity of this reaction in patients suffering from hypoacidie gastritis.Importance of glucose-6-phosphate for metabolism, write the reactions obtained and show the regulations.Undergoing moderate activity, an average person will generate about 350 kJ of heat per hour. Using the heat of combustion of palmitic acid (ΔH = -9977.6 kJ/mol) as an approximate value for fatty substances, estimate how many grams of fat would be required per day to sustain this level, if all were burned for heat.