Diffusion is the movement of molecules without the use of energy. The process by which molecules move from an area of higher concentration to an area of lower concentration. Osmosis is the diffusion of water through a selectively permeable membrane. Molecules move from an area of higher concentration to an area of lower
Lactic Acid Fermentation can only produce 2 ATP (as in alcoholic fermentation) but ethanol is not produced. Lactic acid is toxic to cells, which means anaerobic respiration can only occur for short
This occurs when the solution is saturated. • The equilibrium constant, the Ksp, is no more than the product of the ions in solution. (Remember, solids do not appear in equilibrium expressions.) • For a saturated solution of AgCl, the equation would be: AgCl(s) Ag+(aq) + Cl−(aq) • • The solubility product expression would be: Ksp = [Ag+][Cl−] The AgCl(s) does not appear in the equilibrium expression since solids are left out. Why?
This is a diffusion where the movement of water from an area of high water concentration is moved to an area of low concentration. This experiment takes place to measure the diffusion of small molecules throughout dialysis tubing. This tubing acts as a selectively permeable membrane, allowing the larger molecules to pass through, but slowly. When the two solutions on either sides of the membrane are equal and no net movement is detected, the solutions are isotonic. This means that the solutions have the same concentration of solutes.
The iodine did go in the tube through diffusion and starch couldn’t come out because it’s molecules were too big to get past the membrane. The water just stayed were it originally was because the volume of the beaker nor the volume of the tube changed so much. There were no errors while doing the experiment and the results came out as
A semi-permeable membrane is that of a selective one; only certain molecules can pass through this membrane. However a permeable membrane allows anything to cross the membrane - the opposite of this is the non-permeable membrane (doesn't allow anything to pass through it). It acts like a gate, the semipermeable membrane is for VIP molecules only, the permeable membrane allows anything through and a non-permeable membrane is permanently shut to everything. Diffusion and Osmosis: Osmosis is the movement of water molecules from a higher water potential to a lower water potential across a partially permeable membrane. It is a passive process and does not require energy.
A plant whose cells are in a hypertonic solution will appear droopy because there is a loss of turgor pressure in each cell. When the concentration of water is the same in the cell and the solute the cell is said to be isotonic and is at equilibrium. There is no net movement of water across the membrane. (Biology Department, 2010). Surface area to volume ratio has a direct effect on the amount of water (as well as nutrients and waste) that can diffuse through the plasma membrane.
Osmosis is specifically the movement of water through membranes. Since osmosis and diffusion are both part of passive transport, this means that they do not require energy or pumps. There are different environments created due to diffusion. There are hypotonic, hypertonic, and isotonic environments. Hypotonic is when the solution has a lower solute concentration compared to the water potential.
In the solution of isotonic sucrose concentration, solanum turberosum discs will not gain or lose any mass since osmosis would not occur. Since solanum turberosum is
Osmolarity involves the movement of water across a cell membrane which is osmosis, this movement of water can be hypertonic; a higher concentration of a solute inside the cell which means the cell loses mass, hypotonic; a lower solute concentration inside the cell than outside which means the cell gains mass, or isotonic; a solute concentration the same as the outside of the cell which means there is no net movement of water. In a hypertonic solution in a cell water will leave the cell in order to balance the solute concentration making the cell shrink, in a hypotonic solution however water will enter the cell to balance the concentration. In an isotonic solution water will not move since both sides are equal in concentration. b. Purpose-The purpose of this lab was to determine the osmolarity of plant cells by using potato cores as the cells and sugar as the solute. c. Hypothesis-My hypothesis was that if the amount of solute increases then the then potato core’s weight decreases.