What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 3, Problem 7SA
Summary Introduction
To review:
Which type of lipids are the important components of the human cell membrane.
Introduction:
Cholesterol and phospholipids are important components of the cell membrane.
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Define Membrane Lipids.
Explain the cell membrane's lipid bilayer. What are the lipids found in the cell membrane?
What are the three types of lipids found in membranes? What do they all have in
common?
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What Is Life? A Guide to Biology with Physiology
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- Plasma membranes contain many different types of lipid molecules. What arethe three main types of lipid molecules found in plasma membranes? How arethe three types similar, and how are they different?arrow_forwardWhich property of phospholipids permits them to form the lipid bilayers of cellular membranes?arrow_forwardWhich 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_forward
- Explain the cell membrane’s lipid bilayer. What are the lipids found in the cell membrane? Differentiate between passive and active transport movement of molecules across the cell membrane.arrow_forwardHow does the phospholipid bilayer of a liposome differ from the phospholipid bilayer of the plasma membrane of a cell? (a) The phospholipid bilayer of a liposome contains only phospholipids, without the proteins that are embedded in the plasma membrane of a cell. (b) The phospholipid bilayer of a liposome contains two bilayers of phospholipid molecules, whereas the plasma membrane of a cell contains only one. (c) The phospholipid bilayer of a liposome completely envelops the liposome, whereas the plasma membrane of a cell does not completely envelop the cell. (d) The phospholipid molecules in the phospholipid bilayer of a liposome are oriented with the lipid ends on the outside of the bilayer and the phosphate groups on the inside.arrow_forwardHow do proteins and the lipid bilayer interact with each other in membranes?arrow_forward
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