Osmosis

What is Osmosis

Osmosis is the diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane.

What water concentration do dilute solutions have

A high concentration of water

What water concentration do concentrated solutions have

Low concentration of water

What’s the job of a partially permeable membrane

Allows for some modules to pass through but not all molecules for example sugar molecules can’t pass through but water can

Describe the concentration of cytoplasms

Cytoplasms tend to have a concentrated solution. So contains low concentration of water

What’s happens if we place a animal cell in water

Osmosis takes place where water moxleules move from outside the cell inside, rhis causes the cell to expand and eventually burst

What happens if we place an animal cell in a concentrated solution

Water will move from in the cell to out by osmosis,causing cell to shrink

What happens if we place a plant cell into water

The water will move into the cell by osmosis and cause it to expand.

However, cell wall prevents the plant cell from bursting,instead it will swollen. This is called turgid

What happens if we place a plant cell in a concentrated solution

Then water moves from in the cell to out by osmosis. This causes the cell to shrink.

Scientists call this flaccid

How to calculate water uptake (g/hour)

Mass change X 60/time measured