Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 3, Problem 8TYU
Summary Introduction
To review:
The cell’s ability to regulate the function of proteins in case they are folded into rigid, inflexible structures.
Introduction:
The regulation of protein’s activity is controlled by the protein when it is folded into its active form at particular target site.
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What components of the plasma membrane might this molecule interact with?
Which characteristic of a phospholipid contributes to the fluidity of the membrane?
Part a) Would a single alpha helix be more stable in a aqueous solution or a membrane. Explain why.
Part b) Why do transmembrane proteins always have secondary structures inside the membrane but aqueous proteins do not?
Part c) If you had a single alpha helix, can it act as a pore for a membrane. Explain.
Chapter 3 Solutions
Biological Science (6th Edition)
Ch. 3 - 1. What two functional groups are bound to the...Ch. 3 - 2. What type of bond is directly involved in the...Ch. 3 - What type of information is used to direct...Ch. 3 - 4. What is an active site?
a. the location in an...Ch. 3 - Prob. 5TYUCh. 3 - Prob. 6TYUCh. 3 - 7. Why are proteins not considered to be a good...Ch. 3 - Prob. 8TYUCh. 3 - Prob. 9TYPSSCh. 3 - 10. Make a concept map (see BioSkills 12) that...
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- if the membrane composition of the golgi in a cell is incorrect, what could have happened?arrow_forwardIn the "fluid " _______ cell membrane model, lipids are organized in a ________ arrangement, such that _______ portions of the lipids are exposed to either the interior or exterior of the cell, while the lipid portions are sandwiched in the middle of the membrane. As part of the cell membrane, a main function of peripheral proteins is to provide _________ , while a main function of proteins is to provide _________ . Other cell membrane molecules include a compound called __________, which functions to provide fluidity to rigid membranes and rigidity to fluid membranes; and surface carbohydrates, which function in the membrane not to provide energy, but instead to provide _________ _____ . Aminophospholipids (including PE and ) move to the inner leaflet of the membrane, by an enzyme known as the ._______ A main function of the cell membrane is to be very selective as to what is able to cross through, a condition known as a barrier.arrow_forwardDescribe the lipid bilayer structure of a cell membrane. What are the roles of proteins in membrane structure?arrow_forward
- What are some functions of membrane proteins?arrow_forwardWhat makes up a Plasma Membrane?arrow_forwardThere is a long chain of amino acids with long sections that are mostly polar, alternating with long sections that are nonpolar. How would this chain be organized if it were destined to become a transmembrane protein? A cytoplasmic protein?arrow_forward
- Which are the two classes of membrane proteins?arrow_forwardWhat do the Lysosomes consist of?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
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Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY