Tryptophan

One of the 20 amino acids that make up proteins. It contains an aromatic ring as part of its side chain.

Recorder

The recorder is a woodwind musical instrument, a type of fipple flute.

Clothing (Western Europe, 1990s)

Clothing reflects the lifestyle and culture of the region's inhabitants.

Grouping of solids 3

This animation demonstrates various groups of solids through examples.

Medieval town in Central Europe

Narrow streets and colourful houses gave medieval towns a special atmosphere.

Clothing (Hungary, 10th century)

Dresses reflect the lifestyles and culture of the given era and region.

Tactics of the Hungarian raiders (9th-10th centuries)

The tactics of the Hungarian light cavalry included pretending to retreat, tempting their opponents into breaking their ranks, after which the Hungarians...

Phenylalanine

One of the 20 amino acids that make up proteins.

Female reproductive system (basic)

The reproductive system is a series of organs working together for the purpose of reproduction.

Silicon

A crystalline substance, an extremely important material in the electronics industry (semiconductors, integrated circuits).

2-methylbutane (C₅H₁₂)

One of the isomers of pentane, used as a solvent.

Arginine

One of the twenty protein-building amino acids.

Leucine

One of the 20 amino acids that make up proteins.

Aspartic acid

One of the twenty protein-building amino acids.

Clothing of Barbarians (5th century)

Clothing reflects the lifestyle and culture of the given era and region.

Glutamine

One of the 20 amino acids that make up proteins.

Valine

One of the 20 amino acids that make up proteins.

Lysine

One of the 20 amino acids that make up proteins.

Cysteine

An amino acid containing sulphur, one of the amino acids that make up proteins.

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