4. Contrary to legend, camels do not store water in their humps, which consist of large fat deposits. How canthese fat deposits serve as a source of water? Calculate the amount of water (in liters) that a camel canproduce from 1.0 kg of fat. Assume for simplicity that the fat consists entirely of tripalmitoylglycerol.

Tripalmitoylglycerol is formed by three palmitoyl-CoA molecules. As a result, it is required to…

Answered: Contrary to legend, camels do not store…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter3: Biological Molecules: The Carbon Compounds Of Life

Section: Chapter Questions

Problem 1ITD

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1..Calculate the number of kcal and amount of protein provided by the following formula: 500 mL of 50% dextrose and 1 liter of a 10% amino acid solution. If 250 mL of a 20% intravenous fat emulsion were added, how many more kcal would be provided?
1. Since the pK values for aspartic acid are 2.0, 3.9 and 10.0, it follows that the isoelectric (pH) is (A) 3.0 (B) 3.9 (C) 5.9 (D) 6.0
10. Your body needs fat to for good health, but dietitian recommend that to reduce the risk of heart disease, you should replace______fats with ————- fats. 11. According to the Atwater scale 1 g of carbohydrates, 1 g of fats, and 1 g of protein contain about ————— kcal although
How long can a camel survive without water and food in a desert if it has 20 kg of fat stored in its hump? Assume: All 20 kg weight of fat store is due to a 24-carbon chain fatty acid with molecular weight 350 Da (g/mol). Minimum water requirement per day for is 1.5 kg. Mol. Wt of water is 18 Da (g/mol). days
1. Fatty acids are a component of fats but have a distinct chemical difference apart from fats that would allow them to travel fairly freely in the aqueous environment of the bloodstream. They don’t, however, and are transported with serum albumin. What about the chemistry of fatty acids makes it so that it might not be good to have a lot of them traveling freely in the bloodstream?
1. Draw the structures of triacylglycerol, cholesterol, phosphatidylcholine, and sphingomyelin. 2. Identify the polar/charged groups and draw how water will orient itself around these groups. 3. Order these lipids from most hydrophobic to most hydrophilic. 4. Predict how the lipids will migrate on the TLC plate when the running buffer is an organic solvent. Keep in mind that although the lipid standards are dissolved in organic solvent, they can (by virtue of their polar/charged groups) interact with the polar silica matrix of the TLC plates.
1. What percent of the total body water is contained within the interstitial fluid? Round your answer to nearest whole number, do not report a decimal (35 not 35.0), do not put the % symbol after the number 2. Identify the analogous protein molecule to a carbohydrate monosaccharide. 3. Identify a chemical reaction type that is both anabolic and endergonic.
5. In order to be absorbed by the body, many pharmaceutical agents like acetylsalicylic acid (aspirin; shown below) must be able to diffuse across cell membranes in the digestive tract. Acetylsalicylic acid has a pK of 3.5. The pH of secretions in the stomach lumen is ~2.5, whereas the pH of secretions in the duodenum lumen is -8. If acetylsalicylic acid was equally soluble in the secretions of these two regions of the digestive tract, would you expect acetylsalicylic acid to be passively absorbed more readily by individual stomach cells or by individual duodenal cells? Explain your choice. HO
4. One serving of samgyupsal contains 51.5 g of carbohydrates, 37.1 g of proteins, and 127.2g of fat. The average food energy contents of these components are 9.0 kcal/g for tat and 4.0 kca/g tor proteins and carbohydrates. An average person (m = 50 kg) uses energy at a rate of 510 kcal/h during heavy exercises. You got excited and you ate four servings of samgyupsal in one sitting. (1 kcal = 4184 /) a. How iong (hes) do you have to exercise to totaly burn your lunch? b. If you can completely convert the energy you gained into kinetic energy, what should be your average running speed (km/hr) to completely burn your meal?
2. Mixtures of amino acids can be analyzed by first separating the mixture into its components through ion-exchange chromatography. Amino acids placed on a cation-exchange resin containing sulfonate (-SO₁) groups flow down the column at different rates because of two factors that influence their movement: (1) ionic attraction between the sulfonate residues on the column and positively charged functional groups on the amino acids, and (2) hydrophobic interactions between amino acid side chains and the strongly hydrophobic backbone of the polystyrene resin. For each pair of amino acids listed, determine which will be eluted first from the cation-exchange column by a pH 7.0 buffer. (a) Asp and Ly, (b) Arg and Met, (c) Glu and Val, (d) Gly and Leu, (e) Ser and Ala
2. Lipoprotein particles are relatively large, spherical clumps of protein and lipid molecules (see Figure 3.18) that circulate in the blood of mammals. They are like suitcases that move cholesterol, fatty acid remnants, triglycerides, and phospholipids from one place to another in the body. Given what you know about the insolubility of lipids in water, which of the four kinds of lipids would you predict to be on the outside of a lipoprotein clump, bathed in the water-based fluid portion of blood?
1. Heat enhances hydrogen bonds, ionic interaction and hydrophobic bonds among the amino residues in a protein.* 1 point The statement is CORRECT. The statement is INCORRECT. 2. Which of the following statements is TRUE for fats and oils?* Fats need more volume of bromine to reach endpoint due to higher degree of unsaturation. Oils need more volume of bromine to reach endpoint due to higher degree of unsaturation. Fats and oils need the same volume to reach endpoint due to same degree of unsaturation. None of the choices

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