BIOLOGY (LOOSELEAF)-W/CONNECT
12th Edition
ISBN: 9781260692181
Author: Raven
Publisher: MCG
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Chapter 5, Problem 4U
The specific function of a membrane within a cell is determined by the
a. degree of saturation of the fatty acids within the phospholipid bilayer.
b. location of the membrane within the cell.
c. presence of lipid rafts and cholesterol.
d. type and number of membrane proteins.
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Students have asked these similar questions
Which of the following does not apply to lipid asymmetry?
a.It arises in the endoplasmic reticulum.
b.It arises due to the flip-flop movement of specific phospholipids to the cytosolic monolayer.
c.It is preserved throughout vesicular transport.
d.It depends on the activity of flippase.
Which of the following statements is CORRECT about the fatty acid residues in membrane lipids?
A. Whole swathes of the membrane have higher saturated residues to increase the overall surface tension.
B. There are more unsaturated units to maintain the fluidity of the structure at all environmental temperatures.
C. More unsaturated residues are present to increase the melting point of the membrane making it resilient.
D. Larger quantities of saturated units are present to maximize stacking and provide effective barrier capacity.
Mark the following statements about the plasma membrane as true or false. If a statement is false, correct it to make a true statement. a. _____ Integral membrane proteins generally span the width of the plasma membrane, whereas peripheral proteins are found on only one side of the membrane. b. _____ Cholesterol provides the plasma membrane with stability in the face of changing ion concentrations . c. _____ Membrane cholesterol is vitally important for cell-cell recognition. d. _____ Membrane proteins often function as channels or carriers. e. _____ The overall structure of the plasma membrane is a mosaic with the components locked tightly in place
Chapter 5 Solutions
BIOLOGY (LOOSELEAF)-W/CONNECT
Ch. 5.1 - Prob. 1LOCh. 5.1 - Explain the fluid mosaic model of membrane...Ch. 5.2 - List the different components of phospholipids.Ch. 5.2 - Prob. 2LOCh. 5.2 - Prob. 3LOCh. 5.3 - Illustrate the functions of membrane proteins.Ch. 5.3 - Prob. 2LOCh. 5.3 - Prob. 3LOCh. 5.4 - Compare simple diffusion and facilitated...Ch. 5.4 - Prob. 2LO
Ch. 5.4 - Prob. 3LOCh. 5.5 - Prob. 1LOCh. 5.5 - Prob. 2LOCh. 5.5 - Prob. 3LOCh. 5.6 - Distinguish between endocytosis and exocytosis.Ch. 5.6 - Illustrate how endocytosis can be specific.Ch. 5 - According to the fluid mosaic model, membranes are...Ch. 5 - Prob. 2IQCh. 5 - The fluid mosaic model of the membrane describes...Ch. 5 - What chemical property characterizes the interior...Ch. 5 - The transmembrane domain of an integral membrane...Ch. 5 - The specific function of a membrane within a cell...Ch. 5 - The movement of water across a membrane is...Ch. 5 - Prob. 6UCh. 5 - Which of the following is NOT a mechanism for...Ch. 5 - A bacterial cell that can alter the composition of...Ch. 5 - What variable(s) influence(s) whether a nonpolar...Ch. 5 - Which of the following does NOT contribute to the...Ch. 5 - How are active transport and coupled transport...Ch. 5 - A cell can use the process of facilitated...Ch. 5 - figure 5.5 describes a classic experiment...Ch. 5 - Each compartment of the endomembrane system of a...Ch. 5 - The distribution of lipids in the ER membrane is...
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- In the plasma membrane, form(s) the lipid bilayer,determine(s) the fluid nature of the membrane, andmainly determine(s) the function of the membrane.a. phospholipids, cholesterol, proteinsb. phospholipids, proteins, cholesterolc. proteins, cholesterol, phospholipidsd. cholesterol, phospholipids, proteinse. cholesterol, proteins, phospholipidsarrow_forwardWhich of the following best describes an integral membrane protein? A.A protein that has an extracellular domain, a membrane-spanning domain that spans the lipid bilayer of the plasma membrane, and an intracellular domain. B.A protein that peripherally associates with the membrane via ionic interactions another protein embedded in the membrane. C.A protein that is soluble in the cytoplasm. D.A protein that peripherally associates with the membrane via ionic interactions between polar charged amino acids and the polar head groups of the phospholipids in the membrane.arrow_forwardwhich of the following statements is correct about the movement of water across a plasma membrane a. it cannot pass through any ion channels b. it moves through the membrane via mediated transport c. even though it a polar molecule, it moves readily through the nonpolar lipid bilayer d. artificial lipid membranes are impermeable to waterarrow_forward
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