Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 2.3CC
Why is the amphipathic nature of membrane phospholipids necessary for a membrane to function as a barrier to polar molecules and ions? How do polar molecules and ions pass through membranes?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following lipid components of the eukaryotic plasma membrane would be associated with the highest membrane fluidity?
a triglyceride with unbranched, saturated, short-chain fatty acids
a monoglyceride with unbranched, saturated, short-chain fatty acids
a triglyceride with unbranched, saturated, long-chain fatty acids
a monoglyceride with branched, unsaturated, short-chain fatty acids
a diglyceride with unbranched, saturated, long-chain fatty acids
According to the fluid mosaic model of cell membranes, which of the following is a
true statement about membrane phospholipids?
They frequently flip-flop from one side of the membrane to the other.
They have hydrophilic tails in the interior of the membrane.
They can move laterally along the plane of the membrane.
They are free to depart from the membrane and dissolve in the surrounding solution.
What materials can easily diffuse through the lipid bilayer, and why?
What is receptor-mediated endocytosis said to be more selective than phagocytosis or pinocytosis?
What do osmosis, diffusion, filtration, and the movement of ions away from like charges all have in common? In what do they differ?
Chapter 2 Solutions
Becker's World of the Cell (9th Edition)
Ch. 2 - What properties of the carbon atom make it...Ch. 2 - QUESTION: Compare the flights of the ionized...Ch. 2 - How would the properties of water change if the...Ch. 2 - Why is the amphipathic nature of membrane...Ch. 2 - Problem Set CONCEPT CHECK 2.4 What characteristics...Ch. 2 - Problem Set CONCEPT CHECK 2.5 TMV is an...Ch. 2 - The Fitness of Carbon. Each of the properties that...Ch. 2 - The Fitness of Water. For each of these statements...Ch. 2 - Wrong Again. For each of the following false...Ch. 2 - Prob. 2.4PS
Ch. 2 - Drug Targeting. Your company has developed a new...Ch. 2 - Its All About Membranes. Answer each of the...Ch. 2 - The Polarity of Water. Defend the assertion that...Ch. 2 - QUANTITATIVE Bond Energies. A single covalent bond...Ch. 2 - TMV Assembly. Each of these statements is an...Ch. 2 - Mars Is Alive? Imagine this futuristic scenario:...
Knowledge Booster
Learn more about
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
- A phospholipid bilayer with equal amounts of saturated and unsaturated fatty acids displays a specific permeability to glucose. What effect will increasing the proportion of unsaturated fatty acids in the bilayer have on the membrane's permeability to glucose?arrow_forwardHow do the phospholipids arrange themselves in the plasma membrane? Why?arrow_forwardWhat enzymes are responsible for distributing phospholipids in the correct side of the membrane?arrow_forward
- what purpose does the plasma membrane’s hydrophobic interior serve?arrow_forwardWhich of the following correctly describes the structure of the phospholipid bilayer in plasma membranes? The polar hydrophilic groups of each leaflet face outward, toward the aqueous environment on either side of the membrane. A The non-polar hydrophobic groups of each leaflet face inward, toward each other. The non-polar hydrophilic groups of each leaflet face outward, toward the aqueous environment on either side of the membrane. B The polar hydrophobic groups of each leaflet face inward, toward each other. The polar hydrophilic groups of each leaflet face inward, toward each each other. The non-polar hydrophobic groups of each leaflet face outward, toward the aqueous environment on either side of the membrane. The non-polar hydrophilic groups of each leaflet face inward, toward each each other. The polar hydrophobic groups of each leaflet face outward, toward the aqueous environment on either side of the membrane.arrow_forwardHow do we know that membrane phospholipids regularly intermingle and move laterally, but rarely flip from one side of the phospholipid bilayer to the other?arrow_forward
- What is the cause of the impermeability of plasma membranes to water-soluble molecules? Group of answer choices the nonpolar nature of water presence of phospholipid bilayer with a nonpolar/hydrophobic interior region presence of transmembrane proteins the presence of cellulosearrow_forwardProteins may be bound to the exoplasmic or cytosolic face of the plasma membrane by way of covalently attached lipids. What are the three types of lipid anchors responsible for tethering proteins to the plasma-membrane bilayer? Which type is used by cell-surface proteins that face the external medium? By glycosylated proteoglycans?arrow_forwardLipid bilayers are said to behave like two-dimensional fluids. What does this mean? What drives the movement of lipid molecules and proteins within the bilayer? How can such movement be measured? What factors affect the degree of membrane fluidityarrow_forward
- A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. What kind of protein do these properties define?arrow_forwardA transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. Do you need to specify any additional properties to turn this protein into a symport that couples the movement of solute A up its concentration gradient to the movement of solute b down its electrochemical gradient?arrow_forwardThe rigidity of the plasma membrane is an essential characteristic that allows for cells to survive and thrive in various environments. What are examples of conditions or molecules that can alter plasma membrane rigidity?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license