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How would you define cellular diffusion?
Cellular diffusion is when molecules in the cell go from high concentration to low concentration to balance out the concentration. Small molecules can diffuse through the cell membrane, but larger molecules need the help of proteins. This is call facilitated diffusion.
What term describes the different in the concentrations of a substance across a cell's membrane?
concentration gradient
When does osmosis occur?
Osmosis occurs when there is a semi-permeable membrane separating two solutions of different concentrations of solute, causing water molecules to move from an area of lower solute concentration to an area of higher solute concentration to equalize the concentration on both sides of the membrane.
What does osmosis require?
Osmosis requires a semipermeable membrane, such as a cell membrane, that allows water molecules to pass through while blocking the passage of solute molecules. It also requires a concentration gradient, with higher concentrations of solute on one side of the membrane compared to the other, to drive the movement of water molecules.
What makes the cell membrane selective permeable?
A cell membrane is selectively permeable because it only allows particles to move across them due to different concentrations. Molecules move from areas of low concentration to high concentration.
What is the best definition of osomosis?
Osmosis is the process by which water molecules move across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration, in order to equalize the concentrations on both sides of the membrane.
How do cells balance concentrations?
Cells balance concentrations by using various mechanisms such as passive diffusion, active transport, and osmosis. Passive diffusion allows molecules to move across the cell membrane from an area of high concentration to an area of low concentration. Active transport requires energy to move molecules against their concentration gradient. Osmosis involves the movement of water across the cell membrane to equalize solute concentrations inside and outside the cell.
What term describes the difference in the concentrations of a substance across a cell's membrane?
The term that describes the difference in concentrations of a substance across a cell's membrane is called the concentration gradient. This gradient drives the movement of substances such as ions or molecules across the membrane through processes like diffusion or active transport to achieve equilibrium.
How would you define diffusion?
Cellular diffusion is when molecules in the cell go from high concentration to low concentration to balance out the concentration. Small molecules can diffuse through the cell membrane, but larger molecules need the help of proteins. This is call facilitated diffusion.
What is the movement of which kind of molecules is controlled by osmosis?
The movement of water molecules is controlled by osmosis. Osmosis is the process by which water moves across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration in order to equalize the concentrations on both sides of the membrane.
What is osmosis controlled by?
Osmosis is controlled by the permeability of the osmotic membrane and the equilibrium of the solutions on either side of the membrane. If the solutions have unequal concentrations or osmotic pressures, and the molecules in the solution can pass through the membrane, then the solutions will mix until both sides have equal concentrations. If the membrane is impermeable, then nothing will happen.
Which process is responsible for moving cellular wastes across the cell membrane?
The process for moving cellular wastes across the cell membrane is known as active transport. Active transport is a source of energy that allows molecules to move from low concentrations to high concentrations, and provides the needed boost to move the molecules uphill.
