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10 Cards in this Set
- Front
- Back
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definition of Biochemisty
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study of life on molecular level
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2 types of living cells
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prokaryotes
eukaryotes |
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characteristics of prokaryotes
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bacteria
most numerous small size (1-10 micrometer) 3 shapes rod, round, spiral |
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3 shapes of prokaryotes
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bacillus (rod)
cocci (round) spirilla (spirl) |
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thick cell membrane
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lipid bilayer containing embedded protein that control the passage of molecules on in and out of the cells can catalyze a variety of reactions
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thick polysaccharide cell wall
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mainly functions to protect the cell from mechanical injury and to prevents the bursting of the cell in more osmotically dilute that contents
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capsule
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protects them from defenses of higher organisms
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mesosomes
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in prokaryotes the plasma membrane infold to serve as the site of DNA replication
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Nucleoid
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the single chromosome in prokaryotes condense to form this
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Pili
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conduits DNA during sexual conjugation or aid in the attachment of the bacterium to a host organisms cell
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