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Concept explainers
(a)
Interpretation: Triacylglycerols has to be classified as an energy-storage lipid, a membrane lipid, an emulsification lipid or a messenger lipid.
Concept introduction: On the basis of biochemical functions, lipids are divided into five categories:
- 1. Energy storage lipids: Triacylglycerols.
- 2. Membrane lipids: Phospholipids, sphingoglycolipid and cholesterol.
- 3. Emulsification lipids: Bile acids.
- 4. Messenger lipids: Steroid hormones and eicosanoids.
- 5. Protective coating lipids: Biological waxes.
(b)
Interpretation: Glycerophospholipids has to be classified as an energy-storage lipid, a membrane lipid, an emulsification lipid or a messenger lipid.
Concept introduction: On the basis of biochemical functions, lipids are divided into five categories:
- 1. Energy storage lipids: Triacylglycerols.
- 2. Membrane lipids: Phospholipids, sphingoglycolipid and cholesterol.
- 3. Emulsification lipids: Bile acids.
- 4. Messenger lipids: Steroid hormones and eicosanoids.
- 5. Protective coating lipids: Biological waxes.
(c)
Interpretation: Prostaglandins has to be classified as an energy-storage lipid, a membrane lipid, an emulsification lipid or a messenger lipid.
Concept introduction: On the basis of biochemical functions, lipids are divided into five categories:
- 1. Energy storage lipids: Triacylglycerols.
- 2. Membrane lipids: Phospholipids, sphingoglycolipid and cholesterol.
- 3. Emulsification lipids: Bile acids.
- 4. Messenger lipids: Steroid hormones and eicosanoids.
- 5. Protective coating lipids: Biological waxes.
(d)
Interpretation: Estrogens has to be classified as an energy-storage lipid, a membrane lipid, an emulsification lipid or a messenger lipid.
Concept introduction: On the basis of biochemical functions, lipids are divided into five categories:
- 1. Energy storage lipids: Triacylglycerols.
- 2. Membrane lipids: Phospholipids, sphingoglycolipid and cholesterol.
- 3. Emulsification lipids: Bile acids.
- 4. Messenger lipids: Steroid hormones and eicosanoids.
- 5. Protective coating lipids: Biological waxes.
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Chapter 19 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Define the following terms: a. eicosanoid b. omega-6 fatty acid c. omega-3 fatty acid d. trans fatty acid e. acyl grouparrow_forwardWhich of the following statements concerning glycolipids is true? a. All glycolipids contain sphingosine. b. All glycolipids contain one sugar residue. c. All glycolipids contain phosphatidylglycerol. d. Some glycolipids contain ceramide, while others do not.arrow_forwardDefine the following terms: a. prenylation b. steroid c. cardiac glycoside d. digitalis e. lipoproteinarrow_forward
- Which of the following is/are NOT (an) essential fatty acids? A. arachidonic acid B. linoleic acid C. palmitic D. oleic acidarrow_forwardDefine the following terms: a. monounsaturated fatty acid b. polyunsaturated fatty acid c. saturated fatty acid d. nonessential fatty acid e. essential fatty acidarrow_forwardProvide an example of each of the following lipids. For those lipids that are fatty acids indicate whether you expect your example to be a liquid or solid at room temperature and alsogive their IUPAC names .a. An -9 fatty acid b. An -7 fatty acid c. A prostaglandin d. A phytosterolarrow_forward
- Which of the following lipids is used for energy storage? A. glycolipids B. glycerophospholipids C. sphingolipids D. triacylglycerolsarrow_forwardThe following are essential fatty acids, EXCEPT: OA. oleic acid B. linoleic acid O c. linolenic acid O D. arachidonic acidarrow_forwardWhich compound is NOT a membrane lipid? a). Sphingolipid b). Glycerophospholipid c). Triacyglycerol d). Cholesterolarrow_forward
- What is the base unit of a lipid? (More than one answer is possible.) A. glycerol B. monoglyceride C. glycogen D. triglyceridearrow_forwardMatch the following: A. A triglyceride on hydrolysis gives, Fatty 1. Sphingosine +Carbohydrate 2. A non- B. A wax consists of, saponifiable lipid C. Phosphoglyceride consists of, Fatty acid 3. Sphingosine + Phosphoric acid+ Carbohydrate D. A sphingomyelin consists of, membered 4. A set of 3 6- And a 5-membered ring Fused together. 5. Saponifiable E. A glycolipid consists of, lipid. F. A steroid is a special type of ring system Consists of 6. Fatty acids and long Chain alcohols 7. Glycerol, G. A prostaglandin is an example of, Fatty acids+ Phosphoric acids H. Triglycerides, phospholipids and glycolarrow_forward(a) Cholesterol is a lipid yet does not form membranes like the membrane lipids and is not used to store energy like the storage lipids. Explain. b) Glycerophospholipids and sphingolipids form membranes but triacylglycerols do not. Why? (c) Triacylglycerols are used for long term energy storage but glycogen and starch are used for short term energy storage. Explainarrow_forward
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