Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 5.3, Problem 1CC
Summary Introduction
To explain: The process of the transfer of phospholipids to the leaflet of the ER membrane facing towards the ER lumen.
Introduction: The phospholipid bilayer is formed in a particular arrangement where its hydrophobic ends are away from the aqueous medium. The phospholipids have their polar hydrophilic head towards the outward side while hiding the hydrophobic parts in between. This configuration is energetically favorable and hence aids to the stability of the membrane.
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What is the energetic driving force for the formation of phospholipid bilayers?
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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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- How do phospholipids regulate the flow of hydrophilic molecules? How does the bilayer layer regulate the flow of hydrophobic molecules?arrow_forwardList three mediator proteins that move phospholipid molecules from one side of a membrane to the other. Why arethese proteins required?arrow_forwardb) Cellular membranes are generally found in environments that contain lots of water. Draw a diagram of what the phospholipid bilayer of a plasma membrane would look like if it were placed in a hydrophobic environment. (**Note that you only have to draw the phospholipid bilayer, you don't have to draw the other major components again as you did in part a) poned In salt wer (ho byorout obods f.Cplan why sctive tnsport is requind in tive tre nolaib beisio c) What part or parts of a cellular membrane play(s) a role in determining the fluidity of the membrane? pslomlo belowarrow_forward
- Which of the following molecules can normally cross a phospholipid bilayer by simple diffusion? O Oxygen O Potassium ion (K+) O Methionine O Glucosearrow_forwardWhat explains the very slow movement of membrane phospholipids from one leaflet of a biological membrane to the other?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
- Why do they do not penetrate through the lipid bilayer?arrow_forwardKnowing that there is constant turnover of phospholipids in a cell’s membrane and that new phospholipids are regularly synthesized, what strategy could a cell (or organism) use to maintain membrane fluidity and integrity in: A) Cold temperatures? B) Hot temperatures?arrow_forwardWhy do the hydrocarbon tails of membrane phospholipids provide a barrier between the inside and outside ofthe cell?arrow_forward
- How Do Lipid droplets form by budding and scission from the ER membrane?arrow_forwardWhat are apoproteins? The enzyme used to catalyze the diffusion of a lipid from the outer leaflet to the inner leaflet of a bilayer is called:arrow_forwardWhy Lysosomes Are Know As “the Cleaners” Of The Cell Waste?arrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license