Binary Fission Revision Notes and Practice Quiz
Bacteria and other prokaryotic cells replicate by a process known as binary fission. Cells that undergo binary fission make copies of their genetic material, then split into two daughter cells.
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GCSE Biology (Science) learning topics and material for students in Year 7 to Year 11.
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Stem Cells Revision Notes and Practice Quiz
Stem cells are cells that have NOT yet been differentiated. They are not yet specialised. Some cells do not become specialised yet, but are called undifferentiated.
Chromosomes Revision Notes and Practice Quiz
Chromosomes carry genetic information in a molecule called DNA. A type of cell division called mitosis ensures process happens.
Exchange Surfaces & Substances Quiz
The exchange surfaces are important because they allow oxygen to be exchanged for carbon dioxide. This process allows the body to get the oxygen that it needs.
Diffusion: Revision Notes
Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration. Diffusion occurs in liquids and gases when their particles collide randomly and spread out.
Stem Cells Quiz
Undifferentiated cells are cells that haven't yet changed to become specialised for a particular task. They are called stem cells.