Glutamic acid

One of the 20 amino acids that make up proteins.

Clothing (Western Europe, 10-12th century)

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

Clothing (Western Europe,1960s)

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

Grouping of solids 3

This animation demonstrates various groups of solids through examples.

Grouping of cuboids

This animation demonstrates various types of cuboids through everyday objects.

Clothing (Western Europe, 1990s)

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

Recorder

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

Tryptophan

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

Asparagine

One of the twenty protein-building amino acids.

Isoleucine

One of the 20 amino acids that make up proteins.

The water cycle (basic)

Water on Earth is in a continuous state of change. The water cycle includes processes such as evaporation, precipitation, melting and freezing.

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.

Folding (intermediate)

Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.

Arginine

One of the twenty protein-building amino acids.

Political and economic unions

Several political and economic unions have been formed between countries during the past decades.

Leucine

One of the 20 amino acids that make up proteins.

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