This document discusses diffusion, the factors that affect it, and osmosis. Diffusion is the movement of molecules from areas of high concentration to low concentration down a concentration gradient. The key factors that influence diffusion are distance, concentration gradient, surface area, temperature, and molecule size. Osmosis is a specific type of diffusion where water molecules move through a partially permeable membrane from a more dilute to more concentrated solution. Osmosis in plant and animal cells can result in cells becoming turgid and firm when water enters, or wilted and flaccid when water leaves.

1. BY:
PUTRY ENDAHSARI

2. Diffusion
Diffusion is the movement of molecule
from high concentration to the low
concentration down concentration
gradient.

3. Factors that affect diffusion:
1. The distance molecule have to travel
2. The concentration gradient
3. The surface area
4. The temperature
5. The size of molecule

4. Solute
and
Solvent
• Solution is made up of two parts, the
solute and the solvent.
• Solute is the substance that dissolves
in a solvent
• Solvent is a liquid that dissolves
substances.

5. Osmosis
Osmosis is the diffusion of water
molecule from dilute solution that
have low concentration gradient to
the concentrated solution that have
low concentration through a partially
permeable membrane.

6. Osmosis in plant and
animal cells
• Turgid is the strong cell wall stops the cell
bursting, when the water get into the cell.
• Wilt is when the cell are shrink, when the
water go out from the cell.
• Plasmolysid is the cytoplasm starts to
move away from the cell wall.
• Flaccid is these cells are no longer firms
and become limp.