Cell membranes are really interesting parts of our cells. They help control what goes in and out.
Cell membranes are mostly made of something called a phospholipid bilayer. This acts like a wall that protects what's inside the cell.
Diffusion is a way that molecules move. Imagine you open a bottle of perfume. The smell spreads around the room. That's diffusion! It happens because molecules move from a place where there's a lot of them to a place where there are fewer.
Osmosis is a special kind of movement, but it only involves water. It happens across a semipermeable membrane, which means some things can pass through, while others can't.
For example, if you put a cell in saltwater, water will leave the cell. This happens to balance the amount of salt inside and outside the cell. Osmosis is really important for keeping cells healthy and avoiding things like dehydration.
Cell membranes help with these processes. They let good things in and keep harmful things out, helping the cell stay healthy!
Cell membranes are really interesting parts of our cells. They help control what goes in and out.
Cell membranes are mostly made of something called a phospholipid bilayer. This acts like a wall that protects what's inside the cell.
Diffusion is a way that molecules move. Imagine you open a bottle of perfume. The smell spreads around the room. That's diffusion! It happens because molecules move from a place where there's a lot of them to a place where there are fewer.
Osmosis is a special kind of movement, but it only involves water. It happens across a semipermeable membrane, which means some things can pass through, while others can't.
For example, if you put a cell in saltwater, water will leave the cell. This happens to balance the amount of salt inside and outside the cell. Osmosis is really important for keeping cells healthy and avoiding things like dehydration.
Cell membranes help with these processes. They let good things in and keep harmful things out, helping the cell stay healthy!