Phonemes are the building blocks of language. Represented by letters of the alphabet, they are the component sounds of spoken words. Most people automatically hear, for example, that the word ...

The genetic code is a set of rules defining how the four-letter code of DNA is translated into the 20-letter code of amino acids, which are the building blocks of proteins. The genetic code is a ...

Atoms are the building blocks of everything. Atoms can form strong bonds with each other, making molecules. Symbols and formulae Letters from the alphabet are used to represent chemical elements.