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Chapter 14 Modern Biology (Holt, Rinehart and Winston)

Unit 4 Evolution Chapter 14 History of Life
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Biogenesis
the principle which states that all living things come from other living things, seems very reasonable to us today
Spontaneous Generation
livings things could also arise from nonliving things
Half-Life
the length of time it takes for one-half of any size sample of an isotope to decay to a stable form
Ribozyme
for an RNA molecule that can act as a catalyst for their own replication
Archaea
a related group of unicellular organisms, many of which thrive under extremely harsh environmental conditions
Chemosynthesis
CO2 serves as a carbon source for the assembly of organic molecules
Cyanobacteria
a group of photosynthetic, unicellular prokaryotes
Endosymbiosis
a large body of evidence suggests about 2.0 billion and 1.5 billion years ago, a type of small aerobic prokaryote was engulfed by and began to live and reproduce inside of a larger, anaerobic prokaryote