Campbell Biology Custom Stony Brook 10 Th Edition
Campbell Biology Custom Stony Brook 10 Th Edition
10th Edition
ISBN: 9781269870818
Author: Reece Urry Cain Wasserman Minorsky Jackson
Publisher: PEARSON
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Chapter 7, Problem 6TYU

DRAW IT An artificial "cell" consisting of an aqueous solution enclosed in a selectively permeable membrane is immersed in a beaker containing a different solution, the “environment”, as shown in the accompanying diagram. The membrane is permeable to water and to the simple sugars glucose and fructose but impermeable to the disaccharide sucrose.

  1. (a) Draw solid arrows to indicate the net movement of solutes into and/or out of the cell.
  2. (b) Is the solution outside the cell isotonic, hypotonic, or hypertonic?
  3. (c) Draw a dashed arrow to show the net osmosis, if any.
  4. (d) Will the artifi­cial cell become more flaccid, more turgid, or stay the same?
  5. (e) Eventually, will the two solutions have the same or different solute concentrations?

Chapter 7, Problem 6TYU, DRAW IT An artificial "cell" consisting of an aqueous solution enclosed in a selectively permeable

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DO NOT COPY THE ANSWER FROM THE SAME QUESTION. Sassa, a biology professor, wanted to demonstrate to her students the applicability of a dialyzing membrane (DM) as a model for the cell membrane by enclosing an aqueous solution in a DM bag and immersing in a beaker containing a different solution. Substances available which are permeable to the DM include 0.02 M NaCl, 0.03 M glucose, and 0.01 M glucose. The only substance available which is completely impermeable to the DM is the 0.01 M lactose. Using the substances given and materials such as a beaker, stirring rod, and string, draw ONLY ONE set-up that can be demonstrated by Ms. Sassa that will satisfy ALL of the following conditions:a. No solute will exhibit a net diffusion out of the cell.b. Glucose will exhibit a net diffusion into the cell.c. NaCl will exhibit a zero net d. No net movement of lactose from the inside to outside of the cell. Make sure to label properly the substance inside the beaker and inside the DM bag.
A lab made cell consisting of an aqueous solution enclosed in a semipermeable membrane is immersed in a beaker containing a different aqueous solution. The cell membrane is permeable ONLY to water, glucose and fructose. What net movement across the cell membrane is expected if the solutions inside the cell and surrounding the cell have the concentrations described in the picture? Environment: "Cell"- 0.01 M sucrose 0.01 M glucose 0.01 M fructose 0.03 M sucrose 0.02 M glucose O fructose will move from the environment into the cell O glucose will move from inside the cell out O all of these are correct O fructose will move from inside the cell out O two these are correct O three of these are correct O sucrose will move from inside the cell out C F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 #3 & 关 4. 6 7 8 F 5 LL O o o oo O శ్రీ
In the stomach, parietal cells are responsible for the formation of the gastric juice. During acid secretion, the pH in the stomach is estimated to be pH = 2, whereas parietal cells maintain an intracellular pH =7.35. The transmembrane potential of parietal cells is typically -70 mV. Body temperature 37°C. 1) Calculate the proton gradient concentration across the parietal membrane 2) Calculate the free energy change associated with the secretion of 1 mole of H* 3) Do you think that Ht transport can be driven by ATP hydrolysis at the ratio of one molecule of ATP per H* transported? You can use your textbook or other sources to check AG for ATP hydrolysis 4) If H* where free to move back to into the cell, calculate the membrane potential that would be required to prevent them to do so

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Campbell Biology Custom Stony Brook 10 Th Edition

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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license