Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 5.2, Problem 1CC
In an animal cell, how can changes in lipid composition affect membrane fluidity?
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Students have asked these similar questions
Describe the lipid bilayer structure of a cell membrane.
What are the roles of proteins in membrane structure?
Which of the following factors would tend to increase membrane fluidity?
A greater proportion of unsaturated phospholipids
A relatively high protein content in the membrane
A greater proportion of saturated phospholipids
A lower temperature
The plasma membrane is composed of a variety of lipid molecules.
1. Phosphatidylethanolamine
2. Phosphatidylcholine
3. Phosphatidylinositol
4. Phosphatidylserine
5. Sphingomyelin
6. Glycolipids
7. Cholesterol.
Which lipids contain sugar molecules?
Chapter 5 Solutions
Principles of Biology
Ch. 5.1 - Which of the following is not a characteristic of...Ch. 5.1 - Prob. 2TYKCh. 5.2 - In an animal cell, how can changes in lipid...Ch. 5.2 - Prob. 2CCCh. 5.2 - Prob. 1TYKCh. 5.2 - Which of the following changes would make a...Ch. 5.3 - Prob. 1BCCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2BCCh. 5.3 - Prob. 2CC
Ch. 5.3 - Prob. 1TYKCh. 5.3 - Prob. 2TYKCh. 5.4 - Prob. 1CCCh. 5.4 - Prob. 1TYKCh. 5.4 - Prob. 2TYKCh. 5.5 - Prob. 1BCCh. 5.5 - Prob. 1TYKCh. 5.6 - Prob. 1CCCh. 5.6 - A form of endocytosis that involves the formation...Ch. 5.7 - Prob. 1CCCh. 5.7 - Prob. 2CCCh. 5.7 - Prob. 1BCCh. 5.7 - Anchoring junctions that adhere adjacent animal...Ch. 5 - Which of the following statements best describes...Ch. 5 - Which of the following events in a biological...Ch. 5 - Prob. 3TYCh. 5 - Carbohydrates of the plasma membrane are bonded to...Ch. 5 - Which of the following movements would not be an...Ch. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - What features of a membrane are a major...Ch. 5 - Prob. 9TYCh. 5 - Large particles can be brought into the cell by...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Describe two different ways that integral membrane...Ch. 5 - A principle of biology is that living organisms...Ch. 5 - Prob. 1CBQCh. 5 - With regard to bringing solutes into the cell...
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- Which characteristic of a phospholipid contributes to the fluidity of the membrane?arrow_forwardDescribe the ways that membrane proteins associate with the lipid bilayer.arrow_forwardA 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_forward
- 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?arrow_forwardWhat are the functional significance of the fluidity of a cell membrane?arrow_forwardMost materials entering the cell pass across the cell membrane by diffusion. In general, the larger the molecule, the slower the molecule diffuses across the membrane. The graph shows the sizes of several molecules that can diffuse across a lipid bilayer. Use the bar graph to answer the following question. Which of the following is a logical prediction based on the graph shown? Size of Molecules Carbon dioxide Glucose Oxygen Water 50 100 150 200 Size (daltons) Moleculearrow_forward
- 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.arrow_forwardMost materials entering the cell pass across the cell membrane by diffusion. In general, the larger the molecule, the slower the molecule diffuses across the membrane. The graph shows the sizes of several molecules that can diffuse across a lipid bilayer. Use the bar graph to answer the following question. Which of the following is a logical prediction based on the graph shown? Size of Molecules Carbon dioxide Glucose Oxygen Water 50 100 150 200 Size (daltons) Cells contain more glucose than oxygen O B Glucose molecules must not be able to cross the cell membrane Carbon dioxide crosses the cell membrane faster than glucose O D Glucose crosses the cell membrane faster than water Moleculearrow_forwardDescribe the chemical composition of membranes. What are the two most critical functions of membranes? What contributes to membrane fluidity and rigidity? Explain Diffusion. What are the differences between Osmosis and Dialysis? Explain the differences between Iso, Hypo, and Hypertonic conditions. If the solutions is Hypertonic then the cell would be?arrow_forward
- The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobicarrow_forward(a) Describe permeability of a phospholipid bilayer for the following molecules. Use terms: non-permeable, high permeability, medium permeability. N2, O2, Na+, glucose, sucrose (disaccharide), glycogen, H2O, KCl, K+, Mg2+, glycine and protein (b) Discuss the role of carbonic anhydrase in CO2 transport. (c) Discuss the cause of ‘cold denaturation’ of proteins.arrow_forwardCholesterol has which of the following effects on the plasma membrane of an animal cell? it makes the membrane more rigid at low temperatures, and more fluid at high temperatures it makes the membrane more rigid at both low temperatures and high temperatures it makes the membrane more fluid at high temperatures, and more rigid at low temperatures it makes the membrane more fluid at both high temperatures and low temperatures it makes the membrane more fluid at low temperatures, and more rigid at high temperaturesarrow_forward
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