The three domains of life. Once, there were two, and now there are three - Bacteria, Eukaryote and the newest one, Archaea. All living organisms are placed into one of the three categories. The oldest is bacteria, which has been around since the dawn of time. The second is Eukaryote, which has been around for about 2 billion years, and the youngest being Archaea, which has been around for longer than discovered, in 1977.
Bacteria are single-celled organisms that have evolved through time to adapt to their environment.
Archaea, while only being discovered fairly recently, are some of the oldest single-celled organisms alive. They often live in extreme environments.
Multi-celled organisms makes up for around half of the known organisms that we have classified today. You are a eukaryote.
There are five kingdoms that every organism is placed into. They include animalia, plantae, fungi, protista and bacteria.
The way we classify organisms hasn't changed much from when we started some 300 years ago. Also known as Taxonomy, it was first put together by Carl Linnaeus.
Francis Crick was one of four scientists to discover and render the DNA double helix.
Rosalind Franklin was one of four scientists to discover and render the DNA double helix.
James Watson was one of four scientists to discover and render the DNA double helix.
"The only true wisdom is in knowing you know nothing."
