Partially permeable membrane
A membrane which allows some small molecules to pass through it by diffusion but does not allow other molecules through.
Concentration
The amount of a substance (solute) in a solution
Ions
Charge particles formed when an atom loses or gains electrons during the formation of ionic bonds
Quiz
1. Cells
Drag the labels to identify the different parts of the cell.
2. Into and out of cells
Drag the answers into the correct boxes, to summarise how molecules get into and out of cells.
| Process | Definition | Example |
|---|---|---|
| Diffusion | ||
| Molecules moved from low concentration into high concentration using energy. | ||
| Absorption of water in the digestive system. |
Osmosis
Active transport
1.
What is a mutation?
2.
How does smoking cause lung cancer?
3.
How can mutations cause cancer?
4.
What is chemotherapy?