made of microscopic unit called cells which are the building blocks of everything.
Coloured dyes used to see cell structures more clearly
have a cell wall, cell membrane, cytoplasm, vacuole, chloroplasts, nucleus
have a cell membrane, nucleus and cytoplasm
is the movement of a substance from an are of high concentration to an area of low concentration until the molecules are evenly spread out.
Why is Diffusion important?
it is the process by which important molecules enter the body cells and waste products are removed from cells.
is the movement of water molecules from a region of high concentration to an area of low concentration through a selectively permeable membrane.
Osmosis in Animal Cells
when too much water enters an animal cell, the cell swells up and bursts.
When the cell loses water it shrivels up.
Osmosis in Plant Cells
when too much water enters a plant cell, the cell wall becomes stiff and hard, the cell membrane swells up.
When too much water exits the cell, the cell wall keeps it's shape but the cell membrane shrinks away and pulls all the cell contents with it.