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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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.
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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- The passive movement of a solute through a membrane protein down its concentration gradient is an example of _________. a. osmosis b. active transport c. endocytosis d. diffusionarrow_forwardA cell develops a mutation in its potassium channel that prevents the ion from leaving the cell. If the aquaporins are still active what happens to the cell?arrow_forwardIn which system is osmolarity significant? endocrine system immune system nervous system urinary systemarrow_forward
- The 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 is placed in a solution and it swells and bursts. Explain what happened using the words osmosis, solute, osmotic pressure, and hyper-, hypo- or -iso-tonic.arrow_forwardWater intoxication is caused by Group of answer choices hypertonic intracellular fluid. hypotonic intracellular fluid. hypotonic extracellular fluid. isotonic intracellular fluid. hypertonic extracellular fluid.arrow_forward
- From the list provided select the best choice to complete the sentence below. An overall property that describes the way solutes move through membranes relative to the bulk solution concentrations is A. Diffusivity B. Membrane permeabliltiy C. porosity D. Steric hindrancearrow_forwardWhich of the following is the most accurate definition of concentration gradient? A. Difference in the number of molecules that cross a cell membrane B. Different types of solute molecules found inside and outside a cell C. Different in the amount of a molecule inside and outside a cell D. Difference in the number of molecules on one side of a cell membranearrow_forwardCompare and contrast how water volume and osmolality are regulated.arrow_forward
- Type of Solutes Non-permeable Permeable Solution A 300 0 Solution B 295 20 Solution C 270 30 A cell with an internal osmolarity of 295 mOsm/L (non-permeable solutes) is placed in solution A. Solution A has an effective osmolarity that is ____________ compared to the cell; after water movement has reached a steady state, the cell volume will be ___________. A) hypertonic; decreased B) hypotonic; increased C) isotonic; decreased D) hypertonic; increased A cell with an internal osmolarity of 295 mOsm/L (non-permeable solutes) is placed in solution B. Solution B has an effective osmolarity that is ____________ compared to the cell; after water movement has reached a steady state, the cell volume will be ___________. A) hypotonic; decreased B) hypertonic; decreased C) hypotonic; increased D) isotonic; unchanged A cell with an internal osmolarity of 295 mOsm/L (non-permeable solutes) is placed in solution C. Solution C has an effective osmolarity that is ____________ compared…arrow_forwardUsing the appropriate osmotic terms (hypertonic, hypotonic, or isotonic) describe what would happen to each organism in the following settings: a. A bunch of carrots are placed soaked a sink of distilled water.arrow_forwardA fraternity hazing practice involves pressuring freshmen to drink large quantities of pure water in a very short time period. Explain in a few sentences why this is dangerous, given what you know about osmotic pressure and cells.arrow_forward
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