Inquiry into Life
15th Edition
ISBN: 9781259426162
Author: Sylvia S. Mader Dr., Michael Windelspecht
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 4.1, Problem 1A
In the fluid-mosaic model, the fluid properties are associated with the nature of the and the mosaic pattern is established by the .
a.
b. phospholipids; embedded proteins
c. embedded proteins; cholesterol
d. phospholipids; nucleic acids
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Students have asked these similar questions
Define the following terms: a. lipid bilayer b. fluid mosaic model c. membrane fluidity d. flippase e. floppase
Discuss the physical properties of a membrane, the movement of its phospholipids and proteins– explain the fluid mosaic model.
Match the term with its correct description:
a. transport protein
b. active transport
c. diffusion
d. passive transport
e. osmosis
f. endocytosis
g. exocytosis
h. equilibrium
The diffusion of water through a cell membrane
The movement of substances through the cell membrane without the use
of cellular energy
Used to help substances enter or exit the cell membrane
When energy is required to move materials through a cell membrane
When the molecules of one substance are spread evenly throughout
another substance to become balanced
A vacuole membrane fuses (becomes a part of) the cell membrane and the
contents are released
Chapter 4 Solutions
Inquiry into Life
Ch. 4.1 - Describe the fluid-mosaic model of membrane...Ch. 4.1 - Describe the diverse roles of proteins in...Ch. 4.1 - Prob. 1QTCCh. 4.1 - Prob. 2QTCCh. 4.1 - Prob. 3QTCCh. 4.1 - Prob. 1CYPCh. 4.1 - Prob. 2CYPCh. 4.1 - In the fluid-mosaic model, the fluid properties...Ch. 4.1 - Prob. 2ACh. 4.1 - Prob. 3A
Ch. 4.2 - Prob. 1LOCh. 4.2 - Predict the movement of molecules in diffusion and...Ch. 4.2 - Prob. 3LOCh. 4.2 - Prob. 1CYPCh. 4.2 - Prob. 2CYPCh. 4.2 - Prob. 3CYPCh. 4.2 - Prob. 4CYPCh. 4.2 - Prob. 4ACh. 4.2 - Prob. 5ACh. 4.2 - Prob. 6ACh. 4.2 - Prob. 7ACh. 4.2 - Prob. 8ACh. 4.2 - Prob. 9ACh. 4.3 - Prob. 1LOCh. 4.3 - Prob. 2LOCh. 4.3 - Prob. 1CYPCh. 4.3 - Prob. 2CYPCh. 4.3 - Prob. 3CYPCh. 4.3 - Prob. 10ACh. 4.3 - Prob. 11ACh. 4 - Prob. S2.6BYBCh. 4 - Section 2.7 How does a protein’s shape relate to...Ch. 4 - Prob. F3.5BYBCh. 4 - Prob. 1CSCh. 4 - Prob. 2CSCh. 4 - Prob. 1TCCh. 4 - Prob. 2TC
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- Biological membranes are often described using the fluid mosaic model. What are three defining characteristics of this model.arrow_forwardConsider 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).arrow_forwardWhat is the order of the molecules on the following list according to their ability to diffuse through a lipid bilayer, beginning with the one that crosses the bilayer most readily. 1. Ca²+ 2. CO₂ 3. Ethanol 4. Glucose 5. RNA 6. H₂O A. Ethanol, Glucose, CO₂, H₂O, RNA, Ca²+ B. CO₂, Ethanol, Glucose, H₂O, Ca²+, RNA C. RNA, Glucose, Ethanol, H₂O, CO₂, Ca²+ D. Ca²+, CO₂, H₂O, Ethanol, Glucose, RNA *Recall that RNA stands for ribonucleic acids, and acids are negatively charged molecules in solutionarrow_forward
- Which statement best fits the following diagram? The purplish dots are sugar molecules and the blue areas are water molecules. On the left side the water molecwles have a concentration of 99.1% and on the right side the water molecules have concentration of 99.9%. 1) The level of fluid on the left will rise because water will move by osmosis through the membrane. 2) The level of the fluid on the left will fall as water moves to the right by osmosis. 3) The level of the water on the left will rise as a result of sugar molecules diffusing through the membrane. 4) The level of the water on the left will fall as sugar molecules diffuse through the membrane.arrow_forwardDifferentiate the following in terms of description and properties. a. Diffusion b. Active transport c. Osmosis d. Imbibitionarrow_forwardThe cellular membrane is often called the fluid mosaic model. To what does this refer? 1. The fluidity of hydrophobic regions and proteins, and the mosaic pattern of hydrophilic regions. 2. The fluidity of phospholipids and the pattern of proteins in the membrane. 3. The fluidity of proteins and the pattern of phospholipids in the membrane. 4. The ability of proteins to switch sides in the membranes.arrow_forward
- Integral proteins are also known as Select one: a. Intrinsic proteins b. Glycosylated proteins c. Transmembrane proteins d. Bilayer proteinsarrow_forwardMatch the letters on the diagram below to the correct terms. 1. Glycoprotein E 2. Hydrophilic portion of a phospholipid 3. Glycolipid B 4. Hydrophobic portion of a phospholipid G 5. Peripheral membrane protein F 6. Hydrophobic portion of a transmembrane protein 7. Hydrophilic portion of a transmembrane protein Aarrow_forwardBiologists use the fluid mosaic model to descfibe membrane structure. Which statements about the fluid mosaic structure of a membrane are correct? Select the three correct statements. The framework of a membrane is a bilayer of phospholipids with their hydrophillic heads facing the aqeous environment inside and outside of the cell and their hydrophobic tails clustered in the center. The diverse proteins found in and attached to membranes perform many important functions. Because membranes are fluid, membrane protrins and phospholipids can drift about in the membrane. Membranes include a mosaic, or mix of carbohydrates embedded in a phospholipids bilayer. The kinky tails of some proteins help keep the membrane fluid by preventing the component molecules from packing solidly together.arrow_forward
- According 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_forwardWhich of the named factors might induce bending of membranes? Select one: O a. Cylindrically shaped lipids O b. Carbohydrates C. Conically shaped proteins O d. Cylindrically shaped proteinsarrow_forward3) For each case given below, describe how the fluidity of membranes will change (increase or decrease) and why this change will happen. A. Increasing the number of double bonds (unsaturation) of the fatty acids in the phospholipids. B. Increasing the length of the fatty acid chains. C. Increasing the cholesterol content of the membrane D. Increasing temperaturearrow_forward
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