Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 28CTQ
A cell develops a mutation in its potassium channels that prevents the ions from leaving the cell
If the cell’s aquaporins are still active, what will happen to the cell? Be sure to describe the tonicity and osmolarity of the cell.
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Create a diagram that demonstrates the difference between tonicity and osmolarity. Be sure to label the new solutions in each condition, draw the changes (if predicted) in cell shape/volume, and use arrows to show the movement of water relative to the cell. Please start with a red blood cell in an isosmotic solution and show what happens to cell shape and water movement when NaCl is added to the solution, or when water is added.
A cell in a hypertonic solution swells because of a net loss of water by osmosis.
True
False
A cell with a total of 0.2 osmol/L is placed into a solution with a total of 0.3 osmol/L (switched from the previous question). It is assumed that the osmotic particles cannot pass through the cell membrane.
Answer the following true or false questions.
1. Solvent is more concentrated in the cell
2. Water will osmose out of the cell
3. The cell will shrink and may look crenated
4. Plant cells have a cell wall to protect them from dehydration caused by osmosis
Chapter 5 Solutions
Biology 2e
Ch. 5 - Figure 5.12 A doctor injects a patient with what...Ch. 5 - Figure 5.16 Injecting a potassium solution into a...Ch. 5 - Figure 5.19 If the pH outside the cell decreases,...Ch. 5 - Which plasma membrane component can be either...Ch. 5 - Which characteristic of a phospholipid contributes...Ch. 5 - What is the primary function of carbohydrates...Ch. 5 - A scientist compares the plasma membrane...Ch. 5 - Water moves via osmosis. throughout the cytoplasm...Ch. 5 - The principal force driving movement in diffusion...Ch. 5 - What problem is faced by organisms that live in...
Ch. 5 - In which situation would passive transport not use...Ch. 5 - Active transport must function continuously...Ch. 5 - How does the sodium-potassium pump make the...Ch. 5 - What is the combination of an electrical gradient...Ch. 5 - What happens to the membrane of a vesicle after...Ch. 5 - Which transport mechanism can bring whole cells...Ch. 5 - In what important way does receptor-mediated...Ch. 5 - Many viruses enter host cells through receptor-...Ch. 5 - Which of the following organelles relies on...Ch. 5 - Imagine a cell can perform exocytosis, but only...Ch. 5 - Why is it advantageous for the cell membrane to be...Ch. 5 - Why do phospholipids rend to spontaneously orient...Ch. 5 - How can a cell use an extracellular peripheral...Ch. 5 - Discuss why the following affect the rate of...Ch. 5 - Why does water move through a membrane?Ch. 5 - Both of the regular intravenous solutions...Ch. 5 - Describe two ways that decreasing temperature...Ch. 5 - A cell develops a mutation in its potassium...Ch. 5 - Where does the cell get energy for active...Ch. 5 - How does the sodium-potassium pump contribute to...Ch. 5 - Glucose from digested food enters intestinal...Ch. 5 - The sodium/calcium exchanger (NCX) transports...Ch. 5 - Why is it important that there are different types...Ch. 5 - Why do ions have a difficult time getting through...
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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
- The cell membrane is permeable to water but not to ions. Select all that apply. Question options: Beaker A is isotonic to the cell. Some water in cell A is moving in and out of the cell. There is a net movement of water into Cell B. Beaker C is hypotonic to Cell C.arrow_forwardThe osmolarity of a 1 M NaCl solution will be _______ to a 1 M solution of CaCl2. Group of answer choices hyperactive hyposmotic isosmotic hyperosmoticarrow_forwardA cell with a total of 0.3 osmol/L is placed into a solution with a total of 0.2 osmol/L. It is assumed that the osmotic particles cannot pass through the cell membrane. Answer the following true or false questions. 1. Osmosis of water molecules will go into the cell 2. The cell will swell and possibly lyse 3. Plant cells are NOT protected against lysis by their cell wallsarrow_forward
- A cell develops a mutation in its potassium channelsthat prevents the ions from leaving the cell. If the cell’saquaporins are still active, what will happen to the cell?Be sure to describe the tonicity and osmolarity of thecell.arrow_forwardAn aqueous solution has an osmolarity of 318 mOsm. If a cell with an intracellular osmolarity of 260 mOsm is placed into this solution, the solution is said to be hypertonic isotonic isoosmotic hypotonicarrow_forwardIn an investigation of osmosis, apple cores were submerged in different molarity solutions to determine the unknown osmolarity of the apple. To determine the molarity five uniform apple cores were massed before submerging them in different molarity solutions. After 24 hours the apple cores were massed again. Then the percent change in mass was determined for the five uniform apple cores in each molarity solution. Molarity of Solution Average % Change of Mass of Apple Cores 0.0 M 21.5 0.2 M 8.0 0.4 M -7.4 0.6 M -19.2 0.8 M -22.7 1.0 M -36.3 (b) Identify the osmolarity of the apple. (c) Describe the environmental conditions taking place in each of the six solutions with the apples.arrow_forward
- Active transport is ____________ movement of water down concentration gradient using a protein channel movement of materials against their concentration gradient movement of one substance against, and one substance down their concentration gradients movement of molecules from high concentration to low concentration using no protein channels movement of materials down their concentration gradient using a protein channelarrow_forwardA cell with intracellular osmolarity of 280 mOsm/L is placed into three different containers varying in osmolarity. Which solution from the list would cause the cell to lose water and shrink? 280 mOsm/L 240 mOsm/L 340 mOsm/L NONE of the abovearrow_forwardWhich of the following statements is CORRECT in describing the nature of water channels? Group of answer choices It is a channel for the transport of any liquid medium. It is a non-gated channel. It is a channel that can facilitate the transport of sodium ions. It is a channel for active transport.arrow_forward
- A cell with a total of 0.3 osmol/L is placed into a solution with a total of 0.2 osmol/L. It is assumed that the osmotic particles cannot pass through the cell membrane. Answer the following true or false questions. 1. All particles will diffuse down a concentration gradient, that is, move from a high concentration into a lower concentration 2. Diffusion down a gradient happens because particles are constantly moving (Kinetic Theory) 3. When solvent particles move down a gradient through a membrane it is called osmosisarrow_forwardA cell is placed in a hypertonic medium triggering its regulatory volume control mechanism. Which of the following statements best describes the main ion movement responsible for the regulatory volume control in this situation? Efflux of K+ from the cytosol. Efflux of Na+ from the cytosol. Influx of Na+ into the cytosol. Influx of K+ into the cytosol.arrow_forwardWhich of the following describes cotransport (secondary active transport)? Group of answer choices D. One substance moving down its gradient causes another substance to move against its gradient. The push and pull of electric charges Equilibrium of all solutes One substance moves from an area of high concentration to an area of low concentration.arrow_forward
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