Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 5, Problem 2RQ
Summary Introduction
To determine:
The configuration when ten phospholipid molecules would assume when placed in water and also explain why they arrange in this configuration.
Introduction:
Phospholipids are a type of lipids that contain phosphate group which are the important component of cell membranes. A phospholipid contains fatty acid and phosphate group in which fatty acids are hydrophobic tails and phosphate group forms the hydrophilic head.
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Draw the structure of oleic acid. How does it influence the membrane properties being part of phospholipids?
When a small amount of oil is added to a beaker of water con
phospholipids, the phospholipids will surround the oil droplets forming
micelles. Draw several cartoon representations of phospholipid molecules
(with a head and tails) to show the arrangement or orientation of
phospholipids in a micelle.
The following figure shows a typical phospholipid. Suppose this molecule
was incorporated into a cell membrane. Which letter indicates the portion of
the molecule that would be exposed to the aqueous environment?
CH₂
I
H₂C-N¹-CH₂
CH₂
A
H₂C
H₂C
H₂C
CH₂
CH₂O
HO
CH ₂
H₂C
H₂C
CH₂
OH
HO
O–CH,
H₂C
H₂C
H₂C
CH₂
HC
CH₂
CH₂
CH-O
CH-OH
H₂C
CH₂ H₂C
CH₂ H₂C/
H₂C
H₂C
H₂C
H₂C
CH₂
H₂C
CH₂
CH₂
CH₂
CH₂
CH₂
CH₂
CH₂
H₂C/
Chapter 5 Solutions
Biology
Ch. 5.1 - Vicious Venoms Some of the most devastating...Ch. 5.1 - Prob. 1TCCh. 5.1 - Prob. 2CSCCh. 5.1 - Prob. 1CYLCh. 5.1 - diagram and describe the fluid mosaic model of...Ch. 5.1 - Prob. 3CYLCh. 5.2 - Prob. 1CYLCh. 5.2 - Prob. 2CYLCh. 5.3 - What is likely to have happened If, instead of...Ch. 5.3 - Prob. 1HYEW
Ch. 5.3 - Prob. 2TCCh. 5.3 - If a plant cell is placed in water containing no...Ch. 5.3 - Would a cell over use active transport to move...Ch. 5.3 - Prob. 5TCCh. 5.3 - Prob. 1CYLCh. 5.3 - Prob. 2CYLCh. 5.3 - Prob. 3CYLCh. 5.3 - Prob. 6TCCh. 5 - Animal cells are surrounded by________ fluid is...Ch. 5 - Which of the following cannot enter a cell by...Ch. 5 - Prob. 3MCCh. 5 - Prob. 4MCCh. 5 - Prob. 5MCCh. 5 - Prob. 1FIBCh. 5 - A membrane that is permeable to some substances...Ch. 5 - Prob. 3FIBCh. 5 - After each molecule, place the two-word term that...Ch. 5 - Prob. 5FIBCh. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQCh. 5 - Define hypotonic, hypertonic, and isotonic. What...Ch. 5 - Describe the following types of transport...Ch. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 1ACCh. 5 - Predict and sketch the configuration that ten...
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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
- A) Briefly describe the basic structure of phospholipids and explain how they can provide an effective barrier against the unregulated movement of molecules into or out of cells. B) Not all phospholipids are identical to one another. Describe two components (parts) of that can be altered to create variation between different phospholipids.arrow_forwardDraw the basic structure of a lipid bilayer and label thehydrophilic and hydrophobic regions. Why is the cytoplasmicmembrane a good permeability barrier?arrow_forwardWhich of the following is true about phospholipid bilayers?arrow_forward
- How many phospholipid molecules are there in a 1-μm region of a phospholipid bilayer membrane? Assume that a phospholipid molecule occupies 70 Å of the surface area.arrow_forwardExplain why phospholipids have a natural tendency to self-assemble into a bilayer. Why is this biologically important?arrow_forwardWhen viewed by electron microscopy, the lipid bilayer is often described as looking like a railroad track. Explain how the structure of the bilayer creates this image.arrow_forward
- Draw the general structure of a phospholipid.arrow_forwardWhat advantage do unsaturated phospholipids have over saturated phospholipids in the lipid bilayer?arrow_forwardIf you place phospholipids in an oil-based solution, would they still self-assemble into a bilayer? If so, describe its structure.arrow_forward
- Describe the structure of a phospholipid and explain which regions of the phospholipid are hydrophobic and which are hydrophilic.arrow_forwardPhospholipids undergo saponification much like triglycerides. Draw the structure of a phospholipid meeting the followingcriteria. Then draw the products that would result from its saponification.(a) a cephalin containing stearic acid and oleic acid (b) a lecithin containing palmitic acidarrow_forwardBiological membranes are critical components of cells that allow compartmentalisation of cellular contents. The diagram shows a biological membrane comprised of a lipid bilayer with a single polypeptide integrated into the membrane and spanning the membrane seven times. What is the name of the specific type of lipid comprising the bilayer shown above? What properties about the heads and tails of these lipid structures force them to be arranged as they are in the lipid bilayer?arrow_forward
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