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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Enzymes

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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.

Transport processes

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

Bacteria (spheres, rods, spirals)

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

NAD⁺, NADP⁺, NADPH

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

The structure of prokaryotic and eukaryotic cells

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

Viruses

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

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