What determines which way materials move during diffusion and osmosis? a. concentration gradient b. polarity c. crenation d. particle size

Which of the following compounds can diffuse through the lipid bilayer of a cell membrane? Select all that apply.     A. Large polar molecules   B. Gases and hydrophobic molecules   C. Ions   D. Small polar molecules like water

Explain the major difference between diffusion and osmosis. Include in your answer which type of the molecule is moving for each process, in which direction the molecules in question are moving (low to high or high to low concentrations).

Suppose that you have a splinter that is embedded so deep in your foot that you cannot remove it with tweezers. How could you use what you learned in this unit as a first-aid remedy in this situation? Select one: O A. Use active transport to your advantage to draw water into your foot. O B. Use osmosis to your advantage by placing your foot in a hypotonic solution. C. Use osmosis to your advantage by placing your foot in a hypertonic solution. D. Use an artificial concentration gradient to draw water into your foot. E. Use osmosis to your advantage by placing your foot in an isotonic solution.

anatomy

18.. Use the following diagram to answer the questions. Assume the membrane is semipermeable to glucose, water, and iodine (IKI). A. Which solutes will diffuse into the cell? B. Which solute will diffuse out of the cell? 10% glucose 40% glucose C. Which solute will not diffuse at all? 20% starch 0% starch D. What type of solution (the outside of the cell - hypertonic, isotonic or hypotonic) does the diagram represent? 70% water 50% water 10% IKI E. What color will the cell be at the conclusion of this experiment? What color will the solution in the beaker be? Justify your answer,

You find a membrane protein that moves molecules across a membrane. What type of transport could that protein be involved in?

_______ is the net movement of substances from a high concentration to a low concentration medium, whereas the _______ is the net movement of water across a membrane. a. Diffusion- ultrafiltration b. Dialysis-osmosis c. Diffusion-osmosis d. Osmosis-diffusion

Molecules that are too large to be moved across a cell membrane can enter the cell by? A. Diffusion B. Passive transport C. Osmosis D. Active transport B.passive