BIOLOGY (LL)
5th Edition
ISBN: 9781264115495
Author: BROOKER
Publisher: MCG
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Chapter 5, Problem 7TY
Summary Introduction
Introduction: Osmosis is the movement of solvent molecules across the concentration gradient from a region of high concentration of solvent known as hypotonic region towards the region of low concentration of solvent molecules known as hypertonic region across a semi permeable membrane.
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You are working with cells that have an internal solute concentration of 5mM solute. This solute is large and ionized. You place them in a medium that has a concentration of 7.7 mM solute. What will happen? (More than one answer may be applicable)
a.
The cells will swell initially, then return to their original size.
b.
The cell will burst.
c.
The cells will shrink in size.
d.
I do not expect anything to happen.
You have an intact flaccid cell with a solute potential of -1.22MPa, you dropped
the cell in a solution of 4M concentration at 20°C.
a) In which direction water will flow? Why?
b) At equilibrium, what will be the cell and solution:
a. Water potential
b. Osmotic potential
c. Pressure potential
Consider a plant cell. The value for solute concentration in a plant cell is -0.12 MPa and the turgor pressure is 0.12 MPa.
1- What is the water potential in this plant cell?
2- If this plant cell were placed in a solution with water potential of -0.1 MPa, what would happen to the cell? (Hint: explain where the water goes and what that does to the cell).
Chapter 5 Solutions
BIOLOGY (LL)
Ch. 5.1 - Core Skill: Modeling The goal of this modeling...Ch. 5.2 - Prob. 1CSCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2CCCh. 5.4 - Prob. 1CSCh. 5.4 - Prob. 2CSCh. 5.4 - Lets suppose the inside of a cell has a solute...Ch. 5.5 - What is the purpose of gating?Ch. 5.5 - Prob. 1EQCh. 5.5 - Prob. 2EQ
Ch. 5.5 - Prob. 3EQCh. 5.6 - What is the function of the protein coat?Ch. 5 - Prob. 1TYCh. 5 - Which of the following events can never be...Ch. 5 - Lets suppose an insect, which doesnt maintain a...Ch. 5 - Prob. 4TYCh. 5 - Prob. 5TYCh. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - Prob. 8TYCh. 5 - Prob. 9TYCh. 5 - Large particles or large volumes of fluid can be...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Prob. 2CQCh. 5 - Prob. 3CQCh. 5 - Prob. 1COQCh. 5 - With regard to bringing solutes into the cell...
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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
- Suppose that a plant cell membrane is permeable with Na*, CI ions and H20, but not with proteins. In addition, it is assumed that 0.05 M Nacl aqueous solution is present outside the cell membrane, and 0.001 M of protein (P) is present inside. The protein is ionized to p, z = 20, and the opposite ion is CI". From this, calculate the theft potential that occurs between the cell membrane and the external solution in equilibrium. Assume that the activity coefficient of all ions is 1.0.arrow_forwardplant cells with an aqueous potential of -600kPa were placed in different aqueous potentials. Determine in which of the following cases after 10 minutes the cells were blocked, started plasmolysis or completely subjected to the latter. Solution A is -400kPa, solution B is - 600kPa, solution C is -900kPa and solution D is distilled waterarrow_forwardIn a beaker containing 0% NaCl, you place a cell which contains 0.9% NaCl. NaCl doesn t cross the membrane. What will be the result?" a There will be net movement of water into the cell. b There will be net movement of NaCl into the cell. c There will be net movement of water out of the cell. d There will be net movement of NaCl out of the cell. e The cell will swell.arrow_forward
- 1) We measured weights before and after soaking a potato in water of different salinities to demonstrate osmosis. There are many other types of membrane transport (as we learned from the Amoeba Sisters!), each with their role in maintaining homeostasis and providing energy, communication, and waste removal for the cell. So why dwell on osmosis? There are some practical bigger- picture things to consider. Choose one of the following scenarios. Describe the scenario. Describe the chain of events terms of tonicity_and movement of water into or out of cells represented by the scenario. Describe the predicted outcomes for the cells/organisms involved. What happens when you dry brine a turkey before cooking? ● • What happens to organisms in soil near salted roads when snow melt and rains occur? Why is sugar considered a good preservative? What is the challenge of heavy rains along the Mississippi River for organisms in the Gulf of Mexico? ● • What happens to fruit when you add sugar? ●arrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a.The primary active transport uses external chemical energy. b.The sodium-potassium pump which is an example of primary active transport is considered as the most important pump. c. In primary active transport, the energy is derived secondarily from energy that has been stored in the form of ionic concentration differences between the two sides of a membrane.arrow_forwardIn the image below, a cell with inactive protein channels in its cell membrane has been added to a solution that contains 0.5 M glucose and 2.8 M NaCl. The cell contains 1.3 M glucose and 2.0 M NaCl. The cell was placed in a [Select] solution and the cell will The protein channels are then activated. These protein channels ONLY facilitate the transport of large, polar substances until equilibrium of water has been [Select] (nothing else). After the protein channels have been activated, the cell will continue to [Select] reached. 1.3 M Glucose 20 M NaCl 0.5 M Glucose 2.8 M NaClarrow_forward
- Suppose that you have a splinter that is embedded so deep in your foot that you cannot remove it with tweezers. How could you use what you learned in this unit as a first-aid remedy in this situation? Select one: O A. Use active transport to your advantage to draw water into your foot. O B. Use osmosis to your advantage by placing your foot in a hypotonic solution. C. Use osmosis to your advantage by placing your foot in a hypertonic solution. D. Use an artificial concentration gradient to draw water into your foot. E. Use osmosis to your advantage by placing your foot in an isotonic solution.arrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Both primary and secondary transport moves solutes against their concentration gradients. b. The primary active transport prepares the conditions of the membrane gradient by making the extracellular membrane slightly more negative than the intracellular membrane. c. The primary active transport uses ATP while secondary active transport helps replenish ATP.arrow_forwardSome antibiotics act as carriers that bind an ion on one side of a membrane, diffuse through the membrane, and release the ion on the other side. The graph shows the conductance of a lipid-bilayer membrane with a carrier antibiotic as a function of temperature. Conductance 40 39 38 Temperature (°C) 37 36 What can you conclude about the effect of a carrier antibiotic on the conductance of the lipid-bilayer membrane? A carrier antibiotic decreases the conductance of a lipid bilayer, regardless of temperature. A carrier antibiotic can shuttle ions across a membrane only when the lipid bilayer is quite rigid. A carrier antibiotic increases the conductance of a lipid bilayer, regardless of temperature. O A carrier antibiotic can shuttle ions across a membrane only when the lipid bilayer is highly fluid.arrow_forward
- If the concentration of a solute is the same both inside and outside the cell, what might you expect with regard to its transport by a membrane protein? A. Since there is no concentration gradient, no transport either in or out of the cell is possible. B. The transport protein has been saturated. C. The solute must be phosphorylated with a phosphate group from ATP before further transport can occur. D. Movement of the solute across the membrane could occur and cause accumulated on one side of the membrane by an active transport protein. The concerted model of allosteric regulation is different from the sequential model, because: A. The concerted model is used to explain homotropic effects B. The sequential model is used to explain heterotropic effects C. Both A and B D. Neither A nor Barrow_forwardThe figure below shows a U-shaped tube with the same level of water (green color) at both sides. What will likely happen if solutes will be added on the left side? Choose the best answer A. The left region with high solutes will have higher water potential. B. The left region with high solutes will have lower water potential. C. The water will move from the region with low solutes and high water potential to the region with high solutes and low water potential. D. The water on the right region will decrease as it moves to the opposite region. A, C, and D B, C, and Darrow_forwardAn artificial cell consisting of an aqueous solution enclosed by a selectively permeable membrane is immersed in a beaker containing a different solution. The membrane is permeable to water and to the simple sugars glucose and fructose but impermeable to the disaccharide sucrose. Draw solid arrows to indicate the net movement of solutes (glucose and fructose) into or out of the cell. b. Is the solution outside the cell isotonic, hypotonic, or hypertonic to the cell? c. Draw a dashed arrow to show the net movement of water, if any d. Will the artificial cell shrivel, swell, or stay the same?arrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license