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18 Cards in this Set
- Front
- Back
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Two major kinds of cells
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Prokaryotic and Eukaryotic
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Prokaryotic and Eukaryotic cells can be distinguished by?
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their structural organization
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Prokaryotes can consist of what organims?
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microorganisms called bacteria as well as archea
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Eukaryotic cells
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are all other forms of life
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DNA combines with what to form what within what?
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DNA combines with protiens to form chromosomes to form within the nnucleus
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cytoplasm contains what?
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thick cytosol and various organelles
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in Prokaryotes the DNA
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is not seperated from the cytoplasm in a nucleus
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In prokaryotes there are
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no membrane enclosed organelles in the cytoplasm
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Almost all prokaryotes have
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tough external cell walls
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Continuity of life is based on
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heritable inofmration in the form of DNA
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the building blocks of the chains (double alpha helix)has?
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founr kinds og nucleotides which convey information by the specific order of these nucleotides
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Paleontology
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the study of fossils was largely developed by Georges Cuvier a French anatomist
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Cuvier recognized that extinction
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had been a common occurence in the history of life
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Instead of evolution Cuvier advocated
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catatrophism, that boundaries between strata were due to local flood or drought that destroyed the species then present. Later, this area would be repopulated be species immigrating from other unaffected areas.
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James Hutton proposed that the diversity of land forms could be explained by mechanims currently operating
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Hutton proposed a theory of gradualism
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Gradulism
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a view of the earths history that attributes profound change to the cumulative product of slow but continuous processes
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Charles Lyell proposed a theory of
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uniformitism
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uniformitism
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is that geological processes had not changed throughout Earth's history
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