Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 5, Problem 2TYK
Which of the following statements is false? Proteins in the plasma membrane can:
a. transport ions.
b. transport chloride ions when there are two mutant copies of the cystic fibrosis transmembrane conductance regulator gene.
c. recognize self versus foreign molecules.
d. allow adhesion between the same tissue cells or cells of different tissues.
e. combine with lipids or sugars to form complex macromolecules.
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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
Which of the following is not a function of the extracellular matrix
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A. Prevents the loss of water when cells are placed in a hypertonic solution.
B. Assists in the movement of substances across the plasma membrane.
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D. Takes place in reception of molecules
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Keratin - an intermediate filament, is classified as Types I and II or acid and base keratins.
b.
Microfilaments have two structures called bundles and networks. The former is used for movement inside the cell while the latter is for intercellular communication.
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Chapter 5 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 5.1 - Describe the fluid mosaic model for membrane...Ch. 5.1 - Give two examples each of integral proteins and...Ch. 5.2 - What is the difference between passive and active...Ch. 5.2 - Prob. 2SBCh. 5.3 - Prob. 1SBCh. 5.3 - Prob. 2SBCh. 5.4 - Prob. 1SBCh. 5.4 - Prob. 2SBCh. 5.5 - Prob. 1SBCh. 5.5 - Prob. 2SB
Ch. 5 - In the fluid mosaic model: plasma membrane...Ch. 5 - Which of the following statements is false?...Ch. 5 - The freeze-fracture technique demonstrated: a....Ch. 5 - A characteristic of carrier molecules in a primary...Ch. 5 - A driving ion moving through a membrane channel in...Ch. 5 - Phagocytosis illustrates which phenomenon? a....Ch. 5 - Place in order the following events of...Ch. 5 - Prob. 8TYKCh. 5 - Which of the following statements is true for the...Ch. 5 - Using the principle of diffusion, a dialysis...Ch. 5 - Discuss Concepts The bacterium Vibrio cholera...Ch. 5 - Prob. 12TYKCh. 5 - Prob. 13TYKCh. 5 - Prob. 15TYKCh. 5 - Some cancer cells are insensitive to typical...Ch. 5 - Some cancer cells are insensitive to typical...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Identify the non-polar organic molecule which can pass freely through the plasma membrane.A. CH3CH2OH (ethanol)B. CO2 (carbon dioxide)C. C6H12O6 (glucose)D. N2 (nitrogen gas)E. CH4 (methanearrow_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_forwardWhich of the following is Not a function of the plasma membrane proteins? A. Acting as enzymes B. Acting as channels C. Acting as carriers D. Stabilizing temperaturearrow_forward
- The following is true about lipif layer of plasma membrane EXCEPT: A. Back to back layers made up of phospolipids B. Contains membrane proteins that function to transport molecules C. Composed of phospolopids that have polar tail and nonpolar head D. Allows molecules to either pass directly through the layer or through the uee of channels and transport proteinsarrow_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_forwardWhich 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_forward
- Describe the properties of the three classes of membrane proteins (integral, peripheral, and lipid-anchored) along: A. differences from each other B. variation among themselvesarrow_forwardMatch the following with the term that best describes them integral part of the plasma membrane can easily cross the semi-permeable plasma membrane cellular currency of cell that enables it to transport molecules against the concetration gradient (i.e active transport) act as channels carriers to transport polar molecules like sugars into cells A. phospholipids B. proteins C. ATP D. oxygenarrow_forwardWhich 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_forward
- The process of “active transport" through a membrane may be described by which of the following? A. the movement of ions and small molecules away from regions where they are in high concentration. B. the use of energy from ATP to move ions and small molecules into regions where they are in lower concentration. C. the plasma membrane engulfs the substance and moves it through the membrane. D. the use of energy from ATP to move ions and small molecules against their concentration gradient.arrow_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_forwardIon channels are formed by a particular kind of membrane protein that allows the passage of a specific ion (or ions) under certain conditions. This type of protein is most likely a(n) a. peripheral membrane protein with additional hydrophobic domains b. integral membrane protein with a transmembrane domain c. a cholesterol-like molecule that is positioned in the phospholipid bilayer d. membrane phospholipid with hydrophilic head group e. soluble enzyme anchored to a scaffolding protein on the cytoplasmic side of the plasma membranearrow_forward
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