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Concept explainers
Interpretation:
The location of pure cholesterol crystals in the body should be identified.
Concept introduction:
A fat or waxy substance present in all parts of the body is known as cholesterol. It helps in the formation of hormones, cell membranes and vitamin D in the body. There are two sources of cholesterol in the blood (1) food and (2) liver. All the cholesterol in the body is made in liver. Lipoproteins help in the movement of cholesterol and the other fats in the blood. They are like particles spherical in the shape. There are two lipoproteins that are commonly known (1) low density lipoproteins and (2) high density lipoproteins. The low density lipoproteins are also known as bad cholesterol because they contain most of the cholesterol. This contributes in the formation of plaque inside the arteries that can cause heart attack or stroke. To keep the level of LDL low one should avoid food containing saturated fats and extra calories. Exercise can helps in maintaining the LDL level and healthy weight of the body. On the other hand, high density lipoproteins are good cholesterol as they remove the cholesterol from the body. This should be high in the body, this can be done by regular exercise and avoiding saturated fats. A cholesterol level can be checked inside the body. This helps in lowering the risk of heart disease.
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Chapter 21 Solutions
Introduction to General, Organic and Biochemistry
- 21-48 List all of the functional groups that make taurocholate water-soluble.arrow_forward21-85 Which of the following statements is (are) consistent with what is known about membranes? (a) A membrane consists of a layer of proteins sandwiched between two layers of lipids. (b) The compositions of the inner and outer lipid layers are the same in any individual membrane. (c) Membranes contain glycolipids and glycoproteins. (d) Lipid bilayers are an important component of membranes. (e) Covalent bonding takes place between lipids and proteins in most membranes.arrow_forward21-101 Glycerophospholipids tend to have both a positive charge and a negative charge in their hydrophilic portions. Does this fact help or hinder lipid packing in membranes? Explain.arrow_forward
- 21-13 Rank the following in order of increasing solubility in water (assuming that all are made with the same fatty acids): (a) triglycerides, (b) diglycerides, and (c) monoglycerides. Explain your answer.arrow_forward21-87 Which statements are consistent with the fluid mosaic model of membranes? (a) All membrane proteins are bound to the interior of the membrane. (b) Both proteins and lipids undergo transverse (flip-flop) diffusion from the inside to the outside of the membrane. (c) Some proteins and lipids undergo lateral diffusion along the inner or outer surface of the membrane.arrow_forward21-29 Name all the groups of complex lipids that contain ceramides.arrow_forward
- Biological waxes have a head and two tails structure. Give the chemical identity of the head and of the two tails.arrow_forward21-90 To what extent do lipids and carbohydrates play structural roles in living organisms? Do these roles differ in plants and in animals?arrow_forwardDescribe the process by which blood immunoglobulins help protect the body from invading bacteria and viruses.arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning
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