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- Osmosis is water movement across a semipermeable membrane. Which of the following is true about water movement across cell membranes? A. In a hypotonic solution, cells will swell. B. In an isotonic solution, cells will shrink. C. In a hypertonic solution, cells will stay the same. D. Cells can neither shrink nor swell because water cannot penetrate the plasma membrane.1) a) Draw arrows to indicate which direction Na+ vs K+ions will tend to move.(into vsout of the cell) b) What prevents these solutes from diffusing across the membrane at a significant rate? c)If the solutes were unable to move across the membrane, would the cell be considered hypertonic, hypotonic or isotonic? d) If the solutes were unable to move across the membrane, which way would water move?(inside the cell, outside the cell or no net movement) e) How did the cell establish the differential in the shown ion concentrations in the first place?Plasma membrane is permeable toa) ATPb) Glucosec) K+d) Urea
- Movementof water _____________ its concentration gradient is called ________________.a.down; diffusionb.up; diffusionc.down; active transportd.up; osmosise.none of the choices apply.In osmosis, water flows from hypertonic/hypotonic/isotonic solutions to hypertonic/hypotonic/isotonic solutions, until both solutions are hypertonic/hypotonic/isotonic.When a cell is placed in a hypertonic solution,a. solute exits the cell to equalize the concentration on both sides ofthe membrane.b. water exits the cell toward the area of lower solute concentration.c. water exits the cell toward the area of higher soluteconcentration.d. there is no net movement of water or solute.
- Movement of phospholipids from side to side is calleda) Facilitated diffusionb) Lateral diffusionc) Transverse diffusiond) Simple diffusionIn osmosis, water moves from an area of low solute concentration (high water concentration) to an area of high solute concentration (low water concentration). So, it's the movement of water that helps balance the concentration of solutes on both sides of a semipermeable membrane. My question is when water move from high concentration to low concentration ,it's the movement of water making it balance. So why does it says in definition low solutue concentration going to that high solutue concentration, isn't it make the solute like ion and other molecules going to the higher side and not making it balance. High concentration of water to low concentration water movement is make sense to me But low solute cocentration to high solute concentration part does not make sense at all Please explain how does low concerned ntration solute going to high concentration of solute making balance?Movement of phospholipids to opposite sides is calleda) Facilitated diffusionb) Lateral diffusionc) Transverse diffusiond) Simple diffusion
- A blood cell with a 2% internal solute concentration is placed in a solution that has a 0.2% solute concentration. The solute is impermeable to the plasma membrane. How would you classify the solution compared to the cell – hypotonic, hypertonic or isotonic? Why? (2 pts.) B) Will the solutes move across the membrane? Why or why not? C) What type of transport would occur in this situation – diffusion, facilitated diffusion, osmosis, active transport or bulk transport. Explain. D) What would happen if the cell began to produce a new membrane protein that allowed the solutes to freely move in across the membrane? ould this change your answer to Part C? Explain.which surface to volume ratio woud be the most efficient for transmembrane transport of substance in cellsYou have a beaker filled with a solution containing 2M glucose, 4M urea and 1M salt.Suspended in the solution is a cell that containing a solution of 1M glucose, 8M urea and 3Msalt. The membrane of the cell is permeable to glucose and salt but not urea. Answer each of thefollowing 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?