10. What is osmosis? Is it correct to call it the diffusion of water across a membrane permeable only to the solvent, (water), and impermeable to the solutes? Define and understand the terms: isotonic, hypotonic, hypertonic. What are the consequences of these conditions on cells with or without cell walls?

10. What is osmosis? Is it correct to call it the diffusion of water across a membrane permeable only to the solvent, (water), and impermeable to the solutes? Define and understand the terms: isotonic, hypotonic, hypertonic. What are the consequences of these conditions on cells with or without cell walls?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 8TYK

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Similar questions

Which of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.
The principal force driving movement in diffusion is______. a. temperature b. particle size c. concentration gradient d. membrane surface area
Why is it advantageous for the cell membrane to be fluid in nature?
1. Define osmosis, simple diffusion, facilitated diffusion. 2.. Identify why each of these is a form of passive transport. 3. Give examples of each type of passive transport.
8. Define homeostasis. maintoining nterral balance 9. What role does the cell membrane play in maintaining homeostasis? 10. How is facilitated diffusion different from diffusion? How are they similar? 11. List two ways that active transport is different than passive transport. 1) 2) 12. Why is the sodium-potassium pump considered an active transport? Which direction are the sodium and potassium bing pumped? How many sodiums are being pumped? How many potassiums are being pumped?
4. In this cartoon, imagine that Romeo is a potassium ion (K+) and Juliet is a sodium ion (Na+). Explain why they're stuck on their own sides of the membrane and what they need to get through it. The Paramecium Parler Wherefore art thou, Ramea?! Star-crossed solutes I'm stuck behind this semipermeable membrane! Ambe Sites
1. Clearly distinguish between the terms diffusion and osmosis.
What among the following describes osmosis 1. The diffusion of water from an area low solute concentration to an area of high solute concentration. 2. Osmotic pressure is the force that allows water to move by osmosis through a selectively permeable membrane 3. When a cell is immersed in a hypertonic solution, water enters the cell by osmosis which causes it to swell and eventually burst. 4. A solution with greater concentration of water and low concentratioj of solute isbtermed as hyposmotic
1. Types of transport of substances through the membrane: passive transport (facilitated diffusion through the biomembrane, its mechanism and features. Channel proteins and transporter proteins, their importance).
1. Explain what effect an increase in surface area of the plasma membrane would have on the rate of net diffusion across a membrane.
3. Draw and label 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 clearly use arrows to indicate the movement of water relative to the cell. Please start with a red blood cell in an isotonic solution (Figure D) and show what happens to cell shape and water movement when NaCl (remember that the membrane is permeable to neither of these ions) (Figure E) or urea (a permeable ion) (Figure F).
1. Explain how diffusion occurs across a cell membrane. What is required for diffusion to occur? 2. Plasma membranes are said to be selectively permeable, what does this term mean? 3. Does diffusion ever cease if an equilibrium is reached?