the origin of life and evolution Flashcards
when did life begin
life has thought to originated 3.6 bya
what were the first living organisms
they are thought to have been very simple molecules that could copy themselves
what were the first proper organisms to evolve
bacteria
what does the word evolution mean
how organisms have changed over time.
what is the hypothesis of spontaneous generation
is that life can arise from non - living matter
timelines of earth from eariest to latest
pre - cambrian, paleozoic , mesozoic and cenozoic
what are characteristics that all living things share
movement , respiration , sensitivity, growth, reproduction, excretion and nutrition
movement
the ability to move through space
respiration
the ability to obtain energy through biochemical reactions
sensitivity
the ability to respond to stimilti
growth
he ability to grow in size
reproduction
the ability to create more living things
excretion
the ability to expose of waste chemicals
nutrition
the ability to extract useful chemicals from the environment
