Viruses

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

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Transport processes

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

Enzymes

Enzymes are protein molecules catalysing biochemical reactions. Their activity can be...

Coenzyme A

An acyl-carrier coenzyme taking part in both anabolic and catabolic processes.

NAD⁺, NADP⁺, NADPH

NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP...

Genome editing

Genome editing is a type of genetical engineering which results in changes in the genome...

What size are bacteria?

This lesson presents the structure and classification of bacteria and the role they play...

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.

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