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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Protobionts
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Early, Chemical-concentrating, Bubblelike structures named by Oparin
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bubbles
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Anaerobically
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Any Process that can occure without oxygen
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AN-aerobic
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endosymbiosis
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theory that proposes that eukaryotic cells evolved from a symbiosis between different species of prokaryotes
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theory
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sexual reproduction
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the process of producing offspring through an alternation of fertilization (producing diploid cells) and meiotic reduction in chromosome number (producing haploid cells)
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multicellularity
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fosters specialization
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metabolism
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the sum of all chemical processes occurring within a living cell or organism
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primary abiogenesis
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Oparin proposed that life must have arisen from nonliving matter under a set of very different environmental circumstances some time in the distant history of the earth.
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nucleus
-in atoms -in eukaryotic cells |
in atoms-the central core, containing protons and neutrons
in eukaryotic cells- the membranous organelle that houses the chromosomal DNA. |
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prokaryotes
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bacteria and archaebacteria;
cells lacking a membrane-bounded nucleus or membrane-bounded organelles. SIMPLE BODY PLAN, NO NUCLEUS appeared 2.5 billion years ago |
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eukaryotes
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cells characterized by membrane-bounded organelles, most notably, the nucleus, and one that possesses chromosomes whose DNA is associated with proteins; organisms composed of such cells.
MORE COMPLEX BODY PLAN |
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coacervates
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spherical aggregations of lipid molecules in water, held together by hydrophobic forces
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Bubble
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extreme halophiles
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salt lovers (archaebacteria)
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bacteria
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major group of prokaryotes; have very strong cell walls and a simpler gene architecture
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peptidoglycan
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a key compound (protein cross-linked carbohydrate material) in the cell walls of most modern prokaryotes
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methanogens
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among the first studied archaebacteria; produce methane
among most primitive archaebacteria existing today |
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