Life on Earth Flashcards
What did plants probably evolve from?
Simple organisms like plankton and algae
What have many scientists suggested?
Theories of how life began
What is uncertain and why?
How life really began because there is insufficient evidence
What did Miller and Urey do in the Miller-Urey experiment?
They used a high voltage spark to stimulate lightning to light a mixture of water, ammonia, methane and hydrogen
Why did Miller and Urey use the substances that they did?
Because those are the substances that were thought to have made up the early atmosphere
What did Miller and Urey manage to produce?
Amino Acids which are the building blocks for protein
What is the primordial soup theory?
A theory that says all the organic molecules formed a primordial soup and that amino acids in the mixture combined to make proteins and then life began
