Cell Runner

How to play

Run through a living cell, switch lanes to dodge viruses and collect the parts of the cell. At each checkpoint you revise and answer three questions; each right answer is a shield bubble for the next run.

On a computer

Left and right arrow keys to switch lanes, Up or Space to jump

On a phone

Swipe or tap ◀ ▶ to switch lanes; tap Jump to leap

What you’ll revise

Class 8 Science: Cell: structure and functions

1. Run 1 · Discovering the cell

   • Robert Hooke first saw cells, in a thin slice of cork, in 1665.
   • The cell is the basic unit of life. An amoeba is a single cell; our bodies are made of many cells.
   • Cells come in many shapes and sizes: nerve cells are long, and an ostrich egg is the largest single cell.

2. Run 2 · Parts of a cell

   • The cell membrane covers the cell and controls what goes in and out.
   • Cytoplasm is the jelly-like substance between the cell membrane and the nucleus.
   • The nucleus controls the cell. Its chromosomes carry genes, which pass features from parents to their young.

3. Run 3 · Plant and animal cells

   • Plant cells have a cell wall outside the cell membrane. Animal cells don’t.
   • Plant cells have plastids. The green ones, chloroplasts, contain chlorophyll for photosynthesis.
   • Plant cells usually have one large vacuole; animal cells have small ones.