Biochemistry: Concepts and Connections
1st Edition
ISBN: 9780321839923
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 2P
Given these molecular components--glycerol, fatty acid, phosphate, long-chain alcohol, and carbohydrate—answer the following:
a. Which two are present in both waxes and sphingomyelin?
b. Which two are present in both fats and phosphatidylcholine?
c. Which are present in a ganglioside but not in a fat?
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Consider olive oil, an oil with a high percentage of fat derived from oleic acid (otherwise known as cis[18:1] fatty acid).
a, Explain why such a structure may allow olive oil to be one of the "healthier" oils?
b, why such a structure may allow olive oil to be a liquid at room temperature, while butter and lard are solid at room temperature?
c, why such a structure may cause olive oil to be prone to oxidative damage upon exposure to air and heat?
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Chapter 10 Solutions
Biochemistry: Concepts and Connections
Ch. 10 - Prob. 1PCh. 10 - Given these molecular components--glycerol, fatty...Ch. 10 - The classic demonstration that cell plasma...Ch. 10 - The lipid portion of a typical bilayers is about...Ch. 10 - In the following situations, what is the free...Ch. 10 - Propose an experiment that would distinguish...Ch. 10 - Prob. 7PCh. 10 - Peptide hormones (such as insulin) must bind to...Ch. 10 - Prob. 9PCh. 10 - Prob. 10P
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- Given lecithin, sphingomyelin, cephalin, phosphatidylcholine which of the following does not contain glycerol as a backbone?arrow_forwardIn preparation for the winter months, a squirrel gorges itself daily with 25g of blueberries (100 g blueberry = 3.6 g glucose [180 g/mol] / 3.6 g fructose [180 g/mol]). How many grams of C16 fatty acids (255 g/mol) can this squirrel accumulate over 10 days of such a diet (assume that all the sugars from the blueberries are converted into C16 fatty acids)?arrow_forwardAnswer yes or no and give a short explanation. Thank you :) 1. Chylomicrons are the transport form of triacylglycerols, aren’t they? 2. Can glycerin in a living cell be converted to 3-phosphoglyceric aldehyde? 3. Is phosphatidic acid a common metabolite in the synthesis of triacylglycerols and phosphatidylcholine?arrow_forward
- A common structural feature of membrane lipids is their amphipathic nature. For example, in phosphatidylcholine, the two fatty acid chains are hydrophobic and the phosphocholine head group is hydrophilic. For each of the following membrane lipids, name the components that are hydrophilic and hydrophobic.. a)phosphatidylethanolamine b) sphingomyelin c) galactosylcerebroside d) ganglioside e) cholesterolarrow_forwardJohann Thudichum, who practiced medicine in London about 100 years ago, also dabbled in lipid chemistry in his spare time. He isolateda variety of lipids from neural tissue and characterized and named many of them. His carefully sealed and labeled vials of isolated lipids were rediscovered many years later.(a) How would you confirm, using techniques not available to Thudichum, that the vials labeled “sphingomyelin” and “cerebroside” actually contain these compounds?(b) How would you distinguish sphingomyelin from phosphatidylcholine by chemical, physical, or enzymatic tests?arrow_forwardD, 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) 6.0arrow_forward
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- asaparrow_forwardIn a TPN bag contains: Kcal of 1000 ml of D50 W, 1000 ml of 7% amino acids, and 650 ml of 20% lipids. A. How many total kcal is provided by this bag of TPN?arrow_forwardDraw the chemical structures of the 18-carbon fatty acids below at physiological pH = 7.5. Stearic acid (18:0) Oleic acid (cis-18:1Δ9) Linoleic acid (all cis-18:2Δ9,12) Linolenic acid (all cis-18:3Δ9,12,15)arrow_forward
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