What term is used when the concentrations of solutes inside and outside a cell are in equilibrium?
If a cell is placed in an isotonic solution, there will be no net flow of water into or out of the cell, and the cell’s volume will remain stable. If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.
When the concentration of solute and solvent are equal on both sides of the membrane?
In equilibrium, the concentration of solute:solvent is equal on both sides of the membrane. Molecules continue to move back and forth across the membrane in equal quantities. 7.
When the concentration of molecules on both sides of a membrane is the same?
During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will continue to move across the membrane in both directions. 2. An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes water to move into the cell.
What occurs in diffusion?
Diffusion occurs when particles spread. They move from a region where they are in high concentration to a region where they are in low concentration. Diffusion happens when the particles are free to move. This is true in gases and for particles dissolved in solutions – but diffusion does not occur in solids.
What is the relationship between surface area to volume ratio and diffusion time?
So the bigger surface area volume ratio causes increasing diffusion rate. That’s why, it was concluded that increasing surface area and volume ratio, increases the rate of diffusion. Thus, surface area and volume ratio is proportional to rate of diffusion.
What are the 2 types of facilitated diffusion?
Facilitated diffusion is performed by various types of proteins that are embedded within the cell membrane. While there are hundreds of different proteins throughout the cell, only two types are found associated with facilitated diffusion: channel proteins and carrier proteins.
What are the 2 differences between active transport and facilitated diffusion?
Active transport is an active process. Thus, it requires energy. Whereas facilitated diffusion is a passive process and does not require energy. Active transport is used to transport molecules against their concentration gradient.