Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 5, Problem 8RQ
Summary Introduction
To explain: The change in the contents of compartment B when sucrose is added to compartment A.
Introduction: A solution is made up of both “solute and solvent”. The solute is usually a solid and solvent is usually a liquid. When the concentration of solute and solvent is equal in and out of the cell, it is said to be in an equilibrium condition. If the concentration of both solute and solvent is unequal like in hypo or hypertonic solutions, a cell will always equalize the concentration of both solute and solvent inside and outside the cell membrane by osmosis.
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Would substances be able to pass through the plasma membrane if the phospholipid tails of the plasma membrane were both saturated fatty acids? Explain why or why not?
DO NOT COPY THE ANSWER FROM THE SAME QUESTION.
Sassa, a biology professor, wanted to demonstrate to her students the applicability of a dialyzing membrane (DM) as a model for the cell membrane by enclosing an aqueous solution in a DM bag and immersing in a beaker containing a different solution. Substances available which are permeable to the DM include 0.02 M NaCl, 0.03 M glucose, and 0.01 M glucose. The only substance available which is completely impermeable to the DM is the 0.01 M lactose. Using the substances given and materials such as a beaker, stirring rod, and string, draw ONLY ONE set-up that can be demonstrated by Ms. Sassa that will satisfy ALL of the following conditions:a. No solute will exhibit a net diffusion out of the cell.b. Glucose will exhibit a net diffusion into the cell.c. NaCl will exhibit a zero net d. No net movement of lactose from the inside to outside of the cell.
Make sure to label properly the substance inside the beaker and inside the DM bag.
A 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?
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
- Why is it advantageous for the cell membrane to be fluid in nature?arrow_forwardIf you shift cells from low temperature to high temperature what lipid would you expect to increase in percentage within the membrane? Why would cells increase the percentage of the lipid chosen above when shifted to high temperature but not the other ones?arrow_forwardLiver cells are packed with glucose. If the concentration of glucose in a liver cell is higher than in the surrounding fluid, what mechanism could the cell use to import even more glucose? Why would only this mode of transport work?arrow_forward
- Which of the following is true about motion of membrane lipids? A. They can move most rapidly when in the gel phase. B. Lateral diffusion is catalyzed by flippase proteins. C. To increase the fluidity of membranes at low temperatures, cells synthesize more saturated fatty acids and fewer unsaturated fatty acids. D. Transbilayer diffusion involves the transfer of lipids from one face of the bilayer to another.arrow_forwardAssume a molecule must cross the plasma membrane into a cell. The molecule is very large. How will it be transported into the cell?arrow_forwardWhich characteristic of a phospholipid contributes to the fluidity of the membrane?arrow_forward
- Explain how cholesterol helps maintain the plasma membrane's fluid naturearrow_forwardIn terms of rate of transport of a molecule across a membrane , what is the difference between passive and active transport?arrow_forwardDescribe ONE modification that could happen to the phospholipids in a membrane that would increase the permeability of the membrane to small non-polar molecules such as oxygen gas. Explain why this modification would increase membrane permeability.arrow_forward
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