In which direction will WATER molecules (the small blue spheres) move across the membrane in the illustration shown here? A *B: Water will move from A to B Water will move from B to A

The movement of water is called osmosis. Osmosis is the diffusion of water, and it too moves to reach equilibrium.   The relationship between solute concentration and water are opposite. An area with high concentration of solute has less water "concentration", and an area of low solute concentration has a higher water "concentration".   Select the options that describe the movement of water if there is a gradient across a membrane.   Hint: There are two correct answers. One with the solute perspective and one with a water perspective.   Select all that apply: Water moves from an area of high solute concentration to an area of low solute concentration.   Water moves from an area of low solute concentration to an area of high solute concentration.   Water moves from an area of high water "concentration" to an area of low water "concentration".   Water moves from an area of low water "concentration" to an area of high water "concentration".

How is osmosis different from simple diffusion? osmosis involves the movement of water, simple diffusion involves the movement of solutes simple diffusion utilizes energy in the form of a solute concentration gradient, osmosis utilizes energy in the form of ATP Osimple diffusion moves solutes with their concentration gradient, osmosis moves solutes against their concentration gradient osmosis is a form of active transport, simple diffusion is a form of passive transport Det betalen տներն ոգու

Rebuild the cell above that is hypertonic to the solution outside.  By hitting the red button, add 20 solutes (green) to the inside of the cell and add 5 water (blue) to the inside of the cell.  Also, add 20 water (blue) to the outside of the cell and 5 solutes (green) to the outside of the cell.  Add blue gated channels to the membrane. Q: What happens to the water molecules in this situation? Q: Which of the above situations is closer to a living membrane system?

The cell membrane facing the extracellular fluid is lined by the following: O a No Charges Ob Positive Charges c. Negative Charges Od. A and B O e A and C

What happens to phospholipid mobility when the cell is treated with agents that disrupt the underlying membrane skeleton?   options:   Their mobility is unchanged.   Their mobility is increased because the fences that normally restrict their diffusion are removed.   Their mobility is decreased because the fences that normally restrict their diffusion are removed.   Their mobility is increased because the treatment raises the temperature.

Cells are placed in a beaker of water. The concentration of glucose outside of the cells is 3 mg/ml. The concentration of glucose inside of the cells is 33 mg/ml. Assuming glucose is the only solute, in which direction will osmosis occur? *

Answer the following questions based on the graph: a) Which of the two molecules that are the same size will passively diffuse across a cell membrane quicker? Why? [2 A] b) Which type of transport method would glucose use? Why? [2 A] Figure 1: Relative Sizes of Molecules Diffusing Across a Cell Membrane Substance Tested water oxygen glycerol glucose alcohol carbon dioxide 0 50 100 150 200 Relative Size of Molecules I

Piston C Piston D Solution A Solution B Semipermeable membrane Above is a crude cartoon of a diffusion system. Two containers with solutions of sucrose in water are connected by a semipermeable membrane that is only permeable to water. Each container has a piston above it. Using this information answer the following. If the concentration of sucrose in solution A is 150mM and in solution B it's 2mM, which of the following would occur? al Piston D will feel an upward pressure. No diffusion will occur. Sucrose will diffuse from solution A to soluion B. Piston C will feel an upward pressure.

Given the following cell type and solutions, draw the cell, showing the net direction of osmosis (water flow) and say what state the cell will be in. Choose from the following terms to describe the state of the cell: Turgid, flaccid, plasmolyzed, crenulated (shriveled), lysed (burst), normal.   An animal cell with an internal osmolarity of 0.32 M (total concentration of all the solutes in solution) that is placed in a solution of 0.32 M NaCl.