11. Which of the following descriptions of 24:6 n-3 fatty acid is correct?A. It is an omega-6 fatty acid.B. It can be found in cortisol.C. It is a 24:6A5,8,11,14,17,20 fatty acid.D. It consists of six C=C double bonds.E. It has a higher melting point than 24:0 fatty acid.

The essential fatty acid cannot be synthesized by our body but they are required for the maintenance…

Answered: 11. Which of the following descriptions…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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1. These fatty acids contain no double bond along the chain. a. unsaturated fatty acid b. saturated fatty acid c. polyunsaturated fatty acid d. monounsaturated fatty acids 2. The general formula of a fatty acid when completely saturated. a. CnH2n0 b. CnH3n02 c. CnH2n02 d. CnH2n03 3. Which of the following is TRUE about trans- fatty acid? a. It is produced when unsaturated fatty acids undergone hydrogenation. b. Consumption of trans fatty acids is now known to be detrimental to health. c. Major sources includes processed product, fast food products, cakes, and other bakery products. d. All of the above 4. The melting points of even-numbered carbon fatty acids increase with chain length. Furthermore, melting point decreases according to unsaturation. a. Both statements are correct. b. The first statement is correct, but the second statement is incorrect. c. The first statement is incorrect, but the second statement is correct. d. Both statements are incorrect. 5. Which of the following…
1. Which of the following is a structural component of a triacylglycerol? a. fatty acids b. glycerol c. both a and b d. neither a nor b 2. Which is TRUE regarding fatty acids? a. It contains a polar hydrocarbon chain. b. It is a component of oils and fats. c. both a and b d. neither a nor b 3. What happens in the stomach during lipid digestion? a. formation of micelles b. hydrolysis of lipids by salivary lipase c. both a and b d. neither a nor b 4. Which process does NOT happen in the small intestine during lipid digestion? a. secretion of bile salts b. formation of micelles c. absorption of long-chain fatty acids by the enterocytes d. a, b, and c are the correct answer. 5. Which of the following describes the enzymatic activity of pancreatic lipase? a. It hydrolyzes the bond between the fatty acids and glycerol. b. It emulsifies the lipid droplet into smaller globules. c. both a and b d. neither a nor b 6. What is the correct sequence of events during lipid digestion? I.…
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
2) Lysine is similar to ornithine. .Why does lysine not form a lactam? a. Infrequency of lysine occurring in proteins. b. Size of the ring formed. c. Charge on the primary amine. d. Formation of salt bridges with anionic amino acids..
1. a. Explain why the melting point of palmitic acid (16 carbons, no double bonds) is slightly lower thanthat of stearic acid (18 carbons, no double bonds). Explain why the melting point of oleic acid (18carbons, one double bond) is lower than that of stearic acid b. A mixture of lipids containing phosphatidic acid, cholesterol, testosterone, phosphatidylserine, andphosphatidylethanolamine was applied to a hydrophobic interaction chromatography column. Thecolumn was washed with a high salt buffer, and the lipids were then eluted with decreasing saltconcentrations. In what order would the lipids be eluted from the column? Explain your answer.
8. Draw and give the name of the following lipid compounds: A. a saturated fatty acid with 18 carbons B. a monounsaturated cis fatty acid with 16 carbons C. any omega-3 fatty acid D. a triglyceride that contains three esters with 14-carbon saturated fatty acids E. any corticosteroid
c. polyunsaturated fatty acid d. monounsaturated fatty acids 17. The general formula of a fatty acid when completely saturated. a. CnH2n0 b. CnH3n02 c. CnH2n02 d. CnH2n03 18. Which of the following is TRUE about trans- fatty acid? a. It is produced when saturated fatty acids undergone hydrogenation. b. Consumption of trans fatty acids in excessive amounts is now known to be detrimental to health. c. Major sources includes processed product, fast food products, cakes and other bakery products. d. All of the above 19. The melting points of even-numbered carbon fatty acids increase with chain length. Furthermore, melting point decreases according to unsaturation. a. Both statements are correct. b. The first statement is correct but the second statement is incorrect. c. The first statement is incorrect but the second statement is correct. d. Both statements are incorrect. 20. Which of the following food products DO NOT contain cholesterol? a. chicken, beef, milk, fish and pork b. palm…
10. Which choice(s) correctly describe this fatty acid? A. It is an omega-3 fatty acid. B. It is a trans fatty acid. C. Both A and B are correct. D. Neither A nor B is correct.
Which of the following best describes the fatty acid 20:3n-4? A. There are 20 carbons plus three carboxyl group in the molecule. B. It is a saturated fatty acid. C. The molecule is an ω4 fatty acid. D. 20:3Δ4,7,10,13. E. It is a monounsaturated fatty acid
1. Choose which of the following are complex lipids. Leukotrienes Testosterone Lecithin Triacontyl hexadecanoate Lycopene 2. Given below are some of the different functions of proteins in cells. Match a correct example. ✓ Immunity ✓ Catalysis ✓ Transport ✓ Structural ✓ Hormone A. Myoglobin B. Antibody C. Insulin D. Beta galactosidase E. Keratin
21. Saponification involves. A. the acidic hydrolysis of a glycerophospholipid B. the basic hydrolysis of a glycerophospholipid C. the acidic hydrolysis of a triacylglycerol D. the basic hydrolysis of a triacylglycerol E. None of the above.
15. Rank the solubility of the following fatty acids in water. A. C<E<B<D<F<A B. A<F<D<B<E<C C. C<E<B<F<D<A D. A<D<F<B<E<C 16. Using the same information in no. 15, rank the solubility of the fatty acids in hexane.* A. C<E<B<D<F<A B. A<F<D<B<E<C C. C<E<B<F<D<A D. A<D<F<B<E<C

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11. Which of the following descriptions of 24:6 n-3 fatty acid is correct? A. It is an omega-6 fatty acid. B. It can be found in cortisol. C. It is a 24:6A5,8,11,14,17,20 fatty acid. D. It consists of six C=C double bonds. E. It has a higher melting point than 24:0 fatty acid.