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TAMS, Dr. Burleson, Biology, Ch. 4


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What are the properties of life?
Cellular organization, Sensitivity, Growth, Development, Reproduction, Regulation, Homeostasis, and Heredity.
What is panspermia?
The theory that life was brought to earth from meteors.
What are the other theories about life's origin?
Special creation and Spontaneous origin.
What kind of atmosphere is it believed life formed in?
A reducing atmosphere.
What are some of the possible locations for the origin of life?
At the ocean's edge, under frozen oceans, deep in the earth's crust, within clay, or at deep-sea vents.
What did the Miller-Urey expirement achieve?
It created organic materials in a simulated environment of the early world.
What is the system of organism classification?
Three Domains: Bacteria, Archaea, Eukarya (Kingdoms: Protista, Fungi, Plantae, Animalia)
What is the hypothesis about the origin of cells?
Cells originated from bubbles. The first bubble hypotheses was the Oparin Bubble Hypothesis.
What are the three hypothesis about chemical evolution?
RNA came first, Protein came first, a Peptide/Nucleic Acid came first.
What are the most primitive organisms? Describe them.
Archaebacteria. They lack peptidoglycan in their cell walls.
What are methanogens? Halophiles? Thermphiles?
Methane producing archaebacteria. Salt-loving archaebacteria. Heat-loving archaebacteria.
What is the second major group of prokaryotes? Describe them.
Bacteria. Strong cell walls, simple gene structure, most modern prokaryotes, may be photosynthetic (cyanobacteria).
What is believed to have led to the existance of eukaryotes?
What allows genetic variation in eukaryotes?
Sexual reproduction.
What allows cell specialization in eukaryotes?
Who made these flashcards?
Robert Fromm

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