This is a 3D computer graphic model of a ribosome. Ribosomes are composed of protein and RNA. They consist of subunits that fit together and work as one to translate mRNA (messenger RNA) into a polypeptide chain during protein synthesis (translation).
The azimuth originates at true North. The azimuth originates form the north point. It is a measure of how far an object is form the observer's north point.
Homo erectus is an extinct hominid species that originated in East Africa about 1.8 to 1.9 million years ago.