Biological Science, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (6th Edition)
6th Edition
ISBN: 9780134296029
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 9TYPSS
PROCESS OF SCIENCE In an experiment, you create two groups of liposomes in a solution containing 0.1M NaCl—one made from red blood cell membranes and the other from frog egg cell membranes. When the liposomes are placed in water, those with red blood cell membranes burst more rapidly than those made from egg membranes. Evaluate each of the following statements and identify those that could explain these results.
• T/F The red blood cell liposomes are more hypertonic relative to water than the frog egg liposomes.
• T/F The red blood cell liposomes are more hypotonic relative to water than the frog egg liposomes.
• T/F The red blood cell liposomes contain more aquaporins than the frog egg liposomes.
• T/F The frog egg liposomes contain ion channels, which are not present in the red blood cell liposomes.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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.
ex51
develop a testable hypothesis about the effect of different alcohols on the permeability of biological membrrane based on their weight and / or polarity
Chapter 6 Solutions
Biological Science, Books a la Carte Plus Mastering Biology with Pearson eText -- Access Card Package (6th Edition)
Ch. 6 - 1. How do the phospholipids in archaea differ from...Ch. 6 - If a solution surrounding a cell is hypertonic...Ch. 6 - Prob. 3TYKCh. 6 - 4. Integral membrane proteins are anchored in...Ch. 6 - 5. Cooking oil lipids consist of long, unsaturated...Ch. 6 - Prob. 6TYUCh. 6 - 7. In terms of structure, how do channel proteins...Ch. 6 - 8. Suppose a cell is placed in a solution with a...Ch. 6 - 9. PROCESS OF SCIENCE In an experiment, you create...Ch. 6 - Prob. 10TYPSS
Knowledge Booster
Learn more about
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. You selectively label phospholipids with a fluorescent dye and perform the FRAP assay. You detect a single fluorescence molecule move 100 micrometre into the photobleached area in 2.5 seconds. What is the diffusivity constant for this phospholipid? b. Increasing the ratio of unsaturated to saturated phospholipids in a biological membrane increases membrane fluidity. Describe how the FRAP photobleaching and recovery curves would differ between membranes with 63% and 41% unsaturated phospholipids. c. Draw the FRAP photobleaching and recovery curves for your answer in b. d. What does the “immobile fraction” in a FRAP experiment suggest (see diagram)?arrow_forwardA researcher is isolating proteins from a cell via different techniques. They find that when the cell is ground with a blender, all of the proteins in the cell can be extracted. However if instead the cell membranes are agitated in a 1.2 M KCl mixture, only about 70% of the total protein is extracted.What class of membrane proteins are in this soluble extract and what forces normally hold them to the membrane?What class of membrane proteins are the 30% of proteins that remain behind, and what forces hold these proteins in the membrane? If a solution of ionic solids was not available, what other solvent systems could be used to extract these proteins?arrow_forwardOsmosis Practice Activity Osmosis is the diffusion of water from an area of high concentration to an area of low concentration. Only water moves in osmosis! The diagrams below show the concentration of water and salt inside the cell and the concentration of water and salt surrounding the cell. Complete the sentences below by comparing the concentration of the water inside the cell and the concentration outside the cell. 1. a. Water will flow the cell, out of the cell, in both directions). (into 5% NaCl 95% H20 95% NaCI 5% H20 b. The cell will (shrink, burst, stay the same). a. Water will flow (into the cell. 2. 5% NaCl out of the cell, in both directions). 5% NaCl 95% H20 95% H20 b. The cell will (shrink, burst, stay the same).arrow_forward
- You are viewing two samples of mammalian red blood cells (erythrocytes) under a microscope. One first sample is made up of cells with a typical round shape. Most of the cells in the second sample had burst open. •Describe the properties of the solution that was used to prepare the second sample. • Identify one type of solute that can move through simple diffusion and does not affect osmotic pressure or require a membrane protein to cross a plasma membrane.arrow_forwardName the three major assumptions made by the "Cell theory". (i) The lipid membrane is composed of lipid molecules. Explain the principle of membrane formation highlighting the role of the physical properties of the lipids. (ii) Comparing dimensions and length scales is often a first step in an analysis. Give an approximate value for the thickness of a lipid bilayer and the linear length of a helical turn of a DNA double helix. A technician wants to amplify DNA from a patient sample. However, the lab is not equipped with a thermocycler. (i) (ii) Name two methods for DNA amplification that can be operated at constant temperature and give their acronyms. Explain these two methods in detail using a schematic and name all necessary components that are required to perform the amplification. Describe the main function of the middle ear. Highlight the role of the ossicles and the tympanic membrane.arrow_forward- The classic demonstration that cell plasma membranes are com- posed of bilayers depends on the following kinds of data: • The membrane lipids from 4.74 x 10° erythrocytes will form a monolayer of area 0.89 m² when spread on a water surface. • The surface of one erythrocyte is approximately 100 µm? in area. Show that these data can be accounted for only if the erythrocyte membrane is a bilayer.arrow_forward
- Shown below are cells (colored) that were recently placed into a beaker containing a clear solution For each scenario, indicate whether movement of the molecule into the cell will occur using facilitated diffusion or active transport. А. B. 125mM 20mM fructose glucose 85MM 35mM fructose glucose OA= facilitated diffusion; B= facilitated diffusion OA= active transport; B= active transport O A= active transport; B= facilitated diffusion A= facilitated diffusion; B= active transportarrow_forward;, Consider a spherical cell at body temperature (37°C) that is 10 µm in radius. The concentration of ions inside and outside the cell are given below. Sodium and potassium are the only permeant ions, and the membrane contains proteins that pump in 3 sodium ions for every 2 potassium ions pumped out. [Na*] = ? [K*] = 119mM [Ci] = 8mM [A] = 121mM [Na*] = 120mM [K*] = ? [Cr] = 125MM [glu] = ? (a) Suppose the cell is in osmotic equilibrium, find the 3 unknown concentrations. (b) Suppose the membrane conductance to sodium is 5% that to potassium, find the resting membrane potential via circuit analysis. (c) What would the resting potential be if the membrane were instead permeable only to chloride ions? (d) Suppose the cell was suddenly placed in distilled water, what would happen to it? And, how much external pressure (positive or negative) would be needed to prevent this from happening?arrow_forwardDon't explain, I just want the correct choisearrow_forward
- Membrane lipid molecules exchange places with their lipid neighbors every 10–7 second. A lipid molecule diffuses from one end of a 2-μm-long bacterial cell to the other in about 1 second. Are these two numbers in agreement (assume that the diameter of a lipid head group is about 0.5 nm)? If not, can you think of a reason for the difference?arrow_forwardCalculate the number of cells in the body of an average 68-kg (150-lb) adult. (This will only be accurate to about 1 part in 10 but should give you an idea how scientists estimate this commonly quoted number.) Assume all cells are spheres 20 m in diameter. The volume of a sphere can be determined by the equation v=4/33. (Hint: We know that about two thirds of the water in the body is intracellular and the density of cells is nearly 1 g/mL. The proportion of the mass made up of water is about 60%.)arrow_forwardDialysis bags were filled with various concentrations of starch and placed into beakers with 15% starch solutions for 30 minutes. The membrane is not permeable to starch. If there is more than one correct response, separate the letter response by a coma. For example A, B, C 40% 15% 25% 1% 15% starch 15% starch 15% starch 15% starch A В C Which of the bags is submerged in an isotonic solution? Which of the bags will lose water during the 30 minute period? Which bags are submerged in a hypotonic solution?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license