4steps from the big bang
25things can go into it
ribosome
ComponentPart
The cell's protein factory. Its working core is made of RNA, a strong clue that RNA came before proteins.
First appearedAbout 4.2 billion years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
2 ways to make it
Made from
The cell's protein factory. Its working core is made of RNA, a strong clue that RNA came before proteins.
From the big bang to ribosome
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hhydrogen13.8 bn yrs ago
amino acidsdate unknown
proteinsc. 4.2 bn yrs ago
ribosomec. 4.2 bn yrs ago