Life On Earth Flashcards
The panspermia theory suggests what?
That the chemicals needed for life to occur came from out of space.
The atmosphere of the early earth was comprised of:
Water
Carbon dioxide
Ammonia
Nitrogen
Evidence for the panspermia theory includes…?
The discovery of the Murchison meteorite found in 1969, which contained over 90 amino acids.
The biochemical theory suggests that..?
The chemicals for life were formed on earth.
Who suggested the biochemical theory?
Haldane and Oparin
The biochemical theory was further justified by the experiment by which two scientists?
Harold Urey
Stanley Miller
What impact has the microscope had on the origins of life and evolution of living things?
It has allowed the discovery of micro-organisms
What impact has electron microscopy had on the origins of life and evolution of living things?
It has allowed scientists to examine DNA and organelles
Name a bacteria.
Oscillatora Brevia (Cyanobacteria)
