Chlorophyll

Chlorophyll is a photosensitive green pigment found in plants; it absorbs light energy, thus plays a vital role in photosynthesis.

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Viruses

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

Coenzyme A

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

Genome editing

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

Meiosis

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

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.

Enzymes

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

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