Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 5, Problem 4TY
Summary Introduction
Introduction: The biological membrane is made up of phospholipids, integral proteins, peripheral proteins, glycoprotein and glycolipids. The glycosylation is a process of attaching carbohydrate to the cell membrane for cell-cell interaction and protection of the membrane.
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Consider the following diagram of the cell membrane. Which of the statements is NOT true regarding the cell membrane?
Group of answer choices
a. Proteins and carbohydrates are also components of the cell membrane.
b. Certain phospholipids and proteins on the outer surface of the cell membrane are attached to carbohydrates.
c. Some carbohydrates extend through the entire lipid bilayer and appear on both surfaces of the membrane
d. Some of the proteins embedded in the cell membrane constitute channels (passage canals).
The following is the location of the cell membrane proteins:
O a. Some only face the extracellular fluid
O b. Some only face the intracellular fluid
O c. Some extend throughout the entire cell membrane
d. A and B
e. All of the Above
Integral proteins associate with the membrane through
A. covalent attachment to lipids.
B. covalent attachment to lipid anchors such as palmitoyl groups.
C. hydrophobic interactions with lipids.
D. interactions with carbohydrates attached to lipids.
Chapter 5 Solutions
Biology
Ch. 5.1 - Prob. 1CCCh. 5.2 - Prob. 1CCCh. 5.2 - Prob. 2CCCh. 5.2 - Prob. 1BCCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2CCCh. 5.4 - Prob. 1BCCh. 5.4 - Which molecule would you expect to pass through a...Ch. 5.4 - Prob. 2BCCh. 5.4 - Lets suppose the inside of a cell has a solute...
Ch. 5.5 - What is the purpose of gating?Ch. 5.5 - Prob. 1EQCh. 5.5 - Prob. 2EQCh. 5.5 - Prob. 3EQCh. 5.5 - Prob. 2CCCh. 5.6 - What is the function of the protein coat?Ch. 5 - Prob. 1TYCh. 5 - Which of the following events can never be...Ch. 5 - Lets suppose an insect, which doesnt maintain a...Ch. 5 - Prob. 4TYCh. 5 - Prob. 5TYCh. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - Prob. 8TYCh. 5 - Prob. 9TYCh. 5 - Large particles or large volumes of fluid can be...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Prob. 2CQCh. 5 - Prob. 3CQCh. 5 - Prob. 1COQCh. 5 - With regard to bringing solutes into the cell...
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- The plasma membrane is said to be a fluid-mosaic model because it contains a. waxes suspended within a mosaic of phospholipids.b. a mosaic of proteins suspended within a phospholipid bilayer.c. a polysaccharide mosaic suspended within a protein bilayer.d. a mosaic of phospholipids suspended within a protein bilayer.arrow_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 is NOT a function of membrane proteins? a.Regulate the passage of ions b.Act as carrier molecules for various solutes c.Act as anchors or stabilizers for the cell membrane d.Storage of cellular nutrientsarrow_forward
- Which of the following statements regarding the selective permeability of the lipid bilayer is FALSE? A. the permeability of the lipid bilayer to different substances varies. B. The lipid bilayer component of the plasma membrane is highly permeable to nonvolatile molecules such as oxygen. C. The more hydrophobic or lipid soluble a substance is, the greater the lipid bilayers permeability to that substance. D. The lipid bilayer component of the plasma membrane is moderately permeable to ions and large, uncharged polar moleculesarrow_forwardAccording to the fluid-mosaic model of the plasma membrane, a.protein and phospholipids form a regular, repeating structure. b.the membrane is a rigid structure. c.phospholipids form a double layer, with the polar parts facing each other. d.proteins are free to move within a double layer of phospholipids.arrow_forwardIndicate whether the following statements are true or false. If a statement is false, explain why it is false. a. All types of cells contain cell walls, but only some cell types possess plasma membranes. b. The distribution of specific lipids to the inner and outer leaflet is asymmetrical, or biased, in plasma membranes. C. Lateral diffusion is the movement of lipids from one layer of the membrane to the other. d. Fatty acids tails are used to embed integral, transmembrane proteins in the plasma membrane.arrow_forward
- Which of the following describes the fluid mosaic model of the plasma membrane structure? a. The lipid bilayer is solid at body temperature, thus protecting the cell. b. The phospholipid bilayer is embedded with associated proteins, cholesterol and sugars and has a dynamic arrangement. c. The plasma membrane is composed of two layers of proteins embedded with lipids. d. Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chainsarrow_forwardIn 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 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.arrow_forward
- Which of the following sentences regards ECM in cartilages is NOT correct? ECM does not contain * A. hyaluronan (is a linear, non-sulfated polysaccharide that provides compression strength, lubrication and hydration) B. chondroitin sulfate is a glycosaminoglycan that is bound to the core protein, forming proteoglycan C. link and core proteins, and multi-adhesive glycoprotein chondronectin D. The high content of bound water allows cartilage to serve as a shock absorber, an important functional role E. dense meshwork of thin type IV collagen fibrils None choices C, D, Earrow_forwardWhich of the following statements describes the function of plasma membranes? I. define the boundaries of the cell and its organelles and act as permeability barriers II. sites for specific biological and chemical functions III. possess transport proteins that regulate the movement of substances into and out of the cell and its organelles IV. contain protein molecules that act as receptors to detect external signals V. provide mechanisms for cell-to-cell contact, adhesion, and communication A. I and III B. I, III, IV C. I, III, IV, V D. I, II, III, IV, Varrow_forwardFor biological membranes, which of the following statement is NOT true? A. The phospholipid bilayer is a fluid matrix. B. Protein can be anchored to the membrane by covalently linked lipid chains. C. Proteins can move laterally across the membrane. D. For organisms living in cold temperature, their cell membranes contain more triacylglycerols. E. Transverse motion of lipid molecules can occur occasionally. Enzyme lowers when... A. The energy difference between the substrate and the transition state B. The energy difference between the product and the transition state C. Both A and B D. Neither A nor Barrow_forward
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