Enzymes

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

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Meiosis

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

The structure of prokaryotic and eukaryotic cells

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

Mitosis

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

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...

Coenzyme A

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

Bacteria (spheres, rods, spirals)

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

Animal and plant cells, cellular organelles

Eukaryotic cells contain a number of organelles.

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