Explanation The arrangement of phospholipids with globular proteins and cholesterol in the form of a bilayer form the cell membrane. This arrangement is like polar groups are situated outwards contacted with the hydrophilic aqueous phase. The fatty acids, which are nonpolar groups, are situated towards the interiors and they create a matrix. The hydrocarbon chains are in fluid state as the interior have free movements. Cholesterol is a steroid having a four-membered ring system with a short-balanced aliphatic chain at the seventeenth carbon of the ring. It has a hydroxyl group at the third carbon of the ring system, which is the polar component of the molecule. The four fused ring system is rigid in nature. Except the hydroxyl component of the system, the rest of the molecule is hydrophobic in nature...

Student Solutions Manual for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th

11th Edition

ISBN: 9781305081055

Author: Bettelheim, Frederick A.

Publisher: Cengage Learning

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Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hyd…

Question

Chapter 21, Problem 21.32P

Interpretation Introduction

Interpretation:

This is should be predicted if small amount of cholesterol that are well dispersed in the membrane will contribute to the stiffening or the fluidity of a membrane.

Concept introduction:

The fat-like substance in the body is known as Cholesterol. It is formed by our body and also present in food. Though it is required for good health, large amount of cholesterol can harm our arteries and increase heart disease risk.

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Chapter 21 Solutions

Student Solutions Manual for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th

Ch. 21.8 - Prob. 21.1P Ch. 21 - 21-2 Why are fats a good source of energy for...Ch. 21 - 21-3 Proteins, nucleic acids, and carbohydrates...Ch. 21 - Prob. 21.4P Ch. 21 - Prob. 21.5P Ch. 21 - Prob. 21.6P Ch. 21 - 21-7 For the diglycerides in Problem 21-6, predict...Ch. 21 - 21-8 Predict which acid in each pair has the...Ch. 21 - Prob. 21.9P Ch. 21 - Prob. 21.10P

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Solution Summary: The author explains that small amounts of cholesterol that are well dispersed in the membrane contribute to the stiffening or the fluidity of a membrane.

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Chapter 21 Solutions