How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Getting energy out of your food when you eat
Energy is made using oxygen
Energy is made without oxygen
When a cell is full of water
When a cell has lost water
Diffuses from a high concentration to a low concentration through a partially permeable membrane
They exchange materials between the blood and other body cells.
Transport substances e.g. water, carbon dioxide, glucose
Red Blood Cell
Molecule inside the cell which carries the oxygen
White Blood Cells
Defence against pathogens
Engulf pathogens and digests them
Produces antibodies that stick to pathogens
They are small fragments of cells which help the blood clot a wound