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(5 BYA) The Beginning
The solar system began to form. -
(4.6 BYA) The World Begins to Turn
Earth begins to form by space debris colliding with each other. -
(4 BYA) La Lune
The moon is formed after a collision with Earth. The planet's crust is formed. -
(4 BYA)
Lacks O2 (oxygen), so earth contains no life what so ever. -
(3.5) BYA
Organ molecules join the aqueous chemical soup as amino acids, nitrogenous bases, and carbohydrates. -
3 BYA combining of Organic molucles
organic molecules join the aqueous chemical soup as amino acids, nitrogenous bases, carbohydrates -
3 BYA Chloroplast prodcue energy
respiration develops within mitochondria, compartments perhaps derived form chloroplast produce a higher energy cell -
(2.2 BYA) Our Little Marble
Earth's structure greatly resembles the way it does today. -
2 BYA Mitochondria and Chloroplast make friends
larger cells with more efficient mitochondria and chloroplasts and cells began to collaborate with on another and specialize -
1.5 BYA Time for eukaryotic and prokaryotic
cells without nuclei are single cell bacteria, and there are cells with nuclei. -
(1 BYA) Nature's Shield
Ozone (O3) formed – protected organisms from harmful UV rays so they could exist on land -
1 BYA Cells are big boys and girls now
the hereditary material is finally protected within its own chamber, the nucleus. cells begun to collaborate with each other. -
1600 Microscope
The earliest simple microscope was merely a tube with a plate for the object at one end and, at the other, a lens which gave a magnification less than ten diameters -
1979 Lynn Margulis
Lynn Margulis- theory on the origin of eukaryotic organelles, and her contributions to the endosymbiotic theory, which is now generally accepted for how certain organelles were formed. -
Redi’s experiment
Rotten meat experiment proved that flies did not come from rotting meat. They were naturally attracted to it. -
Spallanzani’s experiment
Used the sealed broth experiment to disprove spontaneous generation. Was still met with ridicule. -
Pasteur’s experiment
Redid Spallanzani’s experiment, and made sure there was no room for rebut from. -
Oparin’s hypothesis
Periodic elements first came into existence as a result of the high temperature of earth gradually cooling, along with ultraviolet radiation. -
Urey and Miller
Revised and tested Oparin’s hypothesis, which was found to be true. -
1989 Thomas Cech
Thomas Cech- a chemist who shared the 1989 Nobel prize in chemistry with Sidney Altman, for their discovery of the catalytic properties of RNA. Cech discovered that RNA could itself cut strands of RNA, which showed that life could have started as RNA.
