EXERCISE 8: ACTIVITY 1 EFFECTS OF TONICITY ON CELLS 1. For each type of solution, list hypothetical concentrations of solvent and solute. 2. Indicate with an arrow which direction water would move through osmosis. 3. Indicate the physical condition of the cell. ISOTONIC SOLUTION Water Solute 98% Water Solute Cell Condition:

EXERCISE 8: ACTIVITY 1 EFFECTS OF TONICITY ON CELLS 1. For each type of solution, list hypothetical concentrations of solvent and solute. 2. Indicate with an arrow which direction water would move through osmosis. 3. Indicate the physical condition of the cell. ISOTONIC SOLUTION Water Solute 98% Water Solute Cell Condition:

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter5: Structure And Function Of Plasma Membranes

Section: Chapter Questions

Problem 28CTQ: A cell develops a mutation in its potassium channels that prevents the ions from leaving the cell If...

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Unit 2: Cells Test Review Cell Transport Label the following pictures: active transport, passive osmosis, passive diffusion, or passive facilitated diffusion. We o Why does Active Transport require ATP energy? What is your vocabulary word that means balance/ equillibrlum? Solutions 1. Label the below images of solutions: hypertonic, hypOtonic, or isotonic. 2. Write if the cell will be at equilibrium, shrink, or swell. 3. Explain where the most water is (inside the cell or outside the cell). 4. Explain where most of the water will move (inside the cell or outside the cell). Water O Water Water Water o O Water Water O Solute O Solute O Solute Explain if water will fNow into or out of the cell in the following scenarios: 1. Salt is 30% inside the cell and 35% outside the cell. • Water is % inside the cell % outside the cell • Waler will flow [inside /outsidel so the cell can reach equilibrium.
Membrane Physiology Homework 1. You have a beaker filled with a solution containing 2M glucose, 4M urea and IM salt. Suspended in the solution is a cell that containing a solution of IM glucose, 8M urea and 3M salt. The membrane of the cell is permeable to glucose and salt but not urea. Answer each of the following questions: a. Where will water move? b. Where will urea move? c. Where will glucose move? d. Where will salt move? e. What will happen to the volume of fluid inside the cell? f. What will happen to the osmolarity of the fluid inside the cell?
The distribution of water is determined by solute concentrations. A hypertonic solution would cause a body cell to shrink in size. Both statements are true. Both statements are false. The first statement is true and the second statement is false. The first statement is false and the second statement is true. Spaced practice question: Consider a membrane protein and its chemistry. Which of the following would describe a channel protein? It is an inorganic compound. It is an example of a globular (functional) protein. It is stable when exposed to an acidic environment. It is an example of a fibrous (structural) protein.
Identify (state whether each item is an example of diffusion, osmosis, filtration, or active transport) 1. Movement of water from an area of lower impermeant solute concentration to an area of higher impermeant solute concentration. 2. Dye particles spread evenly through water. 3. Starch particles pass through a paper membrane. 4. A cell uses energy to "pump" sugar molecules from its external environment. 5. Water in cell moves out into a concentrated salt solution bathing the cell.
Learning task 19-01: Solutions Definition Hypertonic A solution with a greater concentration. Since osmosis causes water molecules to flow out of the cell to balance the concentration of solute on either side of the semipermeable membrane, it is an area with low water concentration Isotonic A solution with the same solute concentration as the semipermeable membrane. It indicated that the water was not only flowing back and forth, but also at an equal velocity. Hypotonic A solution with a lower solute concentration. Because there are less solutes in hypotonic water, it causes the water to flow from a low concentration to a high concentration to balance the concentration of the water. Solute In the osmosis video, will the solution inside the tubing ever be isotonic with the solution outside of the tubing? Explain why or why not. Explain how you can figure out the relative size of molecules in the diffusion video. Diagram
Key Term Matching 1. solute A. has a lower solute concentration 2. solvent B. makes up interior of lipid bilayer 3. hypertonic solution C. passive movement down concentration gradient 4. hypotonic solution D. only allows some substances to pass through 5. isotonic solution E. attached to outer face of plasma membrane 6. diffusion F. in living bodies, it is water 7. osmosis G. spans entire plasma membrane 8. selectively permeable H. a special case of diffusion 9. phospholipid head I. requires assistance to cross plasma membrane 10. fatty acid tail J. substance dissolved in water 11. cholesterol K. serves as an anchor for cytoskeleton 12. carbohydrate chain L. has a higher solute concentration 13. peripheral protein M. gives plasma membrane structural strength 14. transmembrane protein N. contains a phosphate group O. has an equal solute concentration 15. facilitated diffusion 111,111"
* © 90% 08 PM Mon Jan 17 Take Quiz Exit • Water • Sugar permeable membrane Assuming the membrane is permeable to BOTH sugar and water, meaning that both water and sugar are able to move through the membrane, which way will water go? Which way will sugar go? O Sugar left, water right. O Sugar left, water won't move. O Sugar right, water left. O Sugar won't move, water moves right. O Neither sugar nor water move.
Independent practice; Fill out the chart Bellow Use of a Required Channel? (yes or no) Transportation Туре Movement of Energy Particles (in terms of concentration ? (yes or no) gradients) Osmosis Diffusion Facilitated Diffusion Active
ntity_Sound+of+Waves (1) x S Forrar (wrap) y decorar tu libre S Schoold A districtims.seattleschools.org/common-assessment-delivery/start/5398502362?action3Donresume&submissionld%=657119921 Concentration, Osmosis, and Cell Environments HW Quiz Assume that the picture below shows environments on two sides of a selectively permeable membrane. Assume the light blue circles are wa molecules. Assume the red circles are glucose molecules. Which side has the higher concentration? water molecules will flow to the left water molecules will flow to the right water molecules will flow both ways, but mostly will flow to the right water molecules will flow both ways, but mostly will flow to the left water will flow to the left and glucose will flow to the right water will flow to the right and glucose will flow to the left Which best describes the way that the particles move?
Demonstration of Osmosis using Potato Osmometer 1. What will happen when the liquid in the cavity overflows? Explain
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.