Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 5, Problem 2AC
Predict and sketch the configuration of phospholipids that are placed in vegetable oil. Explain your prediction.
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Describe the structure of a phospholipid and explain which regions of the phospholipid are hydrophobic and which are hydrophilic.
Phospholipid molecules were suspended in a mixture made up of water/oil. Describe the molecular arrangement that will occur and provide explanation for the arrangement of the molecules in the aqueous/oil mixture environment and its application in cell membrane functions
Draw the general structure of a phospholipid.
Chapter 5 Solutions
Biology: Life on Earth
Ch. 5 -
1. Membranes consist of a bilayer of ________....Ch. 5 - A membrane that is permeable to some substances...Ch. 5 - Facilitated diffusion involves either _____...Ch. 5 - Prob. 4FTBCh. 5 -
5. After each molecule, place the two-word term...Ch. 5 - Prob. 6FTBCh. 5 - Describe and diagram the structure of a plasma...Ch. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQ
Ch. 5 -
5. Define hypotonic, hypertonic, and isotonic....Ch. 5 -
6. Describe the following types of transport...Ch. 5 - Name the protein that allows facilitated diffusion...Ch. 5 - Imagine a container of glucose solution, divided...Ch. 5 - Prob. 9RQCh. 5 -
1. Different cells have different plasma...Ch. 5 - Predict and sketch the configuration of...Ch. 5 - The fluid portion of blood, in which red blood...Ch. 5 - Some cells in the nervous system wrap themselves...
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- Phospholipids are amphipathic. Explain with an example?arrow_forwardDraw the structure of oleic acid. How does it influence the membrane properties being part of phospholipids?arrow_forwardThe following is a block diagram for a glycerophospholipid where the building blocks are labeled with letters and the linkages between building blocks are labeled with numbers. ____________ 5. Which building blocks are glycerol residues? ____________ 6. Which building blocks are phosphate residues? ____________ 7. Which linkages involve an alcohol residue? ____________ 8. Which linkages involve both glycerol and fatty acid residues?arrow_forward
- When a water droplet is placed in an oil solution, the phospholipids will form a micelle as shown. Explain why the phospholipids become organized in this way. Oil Waterarrow_forwardDescribe a rough structure of a phospholipid and explain the main difference with sphingolipid.arrow_forwardExplain how the lipid bilayer modulate the activity of proteins. Give 2 examples.arrow_forward
- Explain why a phospholipid is both hydrophilic and hydrophobicarrow_forwardExplain the steps of the BIOSYNTHESIS OF PHOSPHOLIPIDS with a diagram.arrow_forwardWhat type of lipids would you expect to find concentrated in lipid rafts? APoly-unsaturated phospholipids B) Saturated phospholipids Phospholipids with short hydrocarbon tails D ) Steroidsarrow_forward
- 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_forwardSubmit a drawing of the following phospholipid: -x-group is phosphoserine (use google if you need to) -C1 tail is C18:0 -C2 tail is C20:2n-3 Draw at physiological pH, and with correct bond angles.arrow_forwardLipid bilayers form spontaneously in a process driven by the hydrophobic effect. Explain how the hydrophobic effect drives bilayer formation from individual lipids in an aqueous environment. Describe how the physical properties of the lipid bilayer are determined by the chemical properties of the membrane lipid components. Diagrams are encouraged for both parts of the question.arrow_forward
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