Bacteria (spheres, rods, spirals)

Bacteria occur in a wide range of shapes, including spheres, rods and spirals.

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Viruses

Viruses consist of protein and DNA or RNA, they reprogram infected cells to produce more...

Mitosis

Mitosis is the process by which a eukaryotic cell divides into two cells and the number...

Animal and plant cells, cellular organelles

Eukaryotic cells contain a number of organelles.

Bacteria (advanced)

Bacteria are unicellular organisms that have no nuclei and are a few micrometres in length

The structure of prokaryotic and eukaryotic cells

There are two basic cell types: prokaryotic and eukaryotic cells.

Transport processes

This animation explains active and passive transport processes occurring through cell...

ADP, ATP

ATP is the main source of energy for cells.

Meiosis

Our gametes are haploid cells produced from diploid cells by meiosis, a special type of...

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