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26 Cards in this Set
- Front
- Back
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tinea pedis
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athletes foot
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prokaryotic
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bacteria
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nucleoid
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cells genetic material found
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lacks membrane bound nucleus
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prokaryotic
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exterior of the cell of prokaryotic cells
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glyccalyx, flagellum, fibriae and pili
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what is glycocalyx? what 2 states is glycocalyx found in?
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cpsd of polysccahires and polypeptidesq---slime layer or capsule
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whip like structure made of protein that propel micro.organisms?
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flagella
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flagella movement that occurs by a light stimulus?
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phototaxix
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flagella movement that occurs by chemical stimulus?
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chemotaxis
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amphitrichous
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flagella at 2 ends of the cell
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Neisseria gonorrhoeae
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gonorrhea, uses fimbrae to adhere to the body.
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what gives prokaryotic the cells its shape?
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cell walll which is located outside the cell membrane
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what is the cell wall composed of?
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peptidoglycan--combo of peptide bonds and carbohydrates
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gram pos or neg. that retain violet dye when cell is stained?
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gram positive--cell wall has many layers
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what is the cell membrane called in prokaryotic cells?
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cytoplasmic membrane
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what is the function of the cytoplasmic membrane?
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provides selective barrier between the environment and the cells internal structures.
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what 2 transport mechanisms used to move subs. in and out of cyto. membrane?
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passive and active transport
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what is the movement of water from a region of hiigher concentratation to lower concentration?
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osmosis
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what is the m/m of a subst. across the cyto. membrane using enery provided by the cell called?
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active transport. ATP contains chemical potential energy that is released by a checmical rx. within a cell.
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what 2 processes move large subs. through the cyto. membrane?
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endocytosis and exocytosis
Endo. uses phagocytosis and pinocyytosis. Exocytosis removes large subs. such as waste products.. |
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what is the intracellular fluid called in prokaryotic cells?
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cytosol--subst. dissolved in cytosol are involved in cell metabolism. the nucleoid is found here as well which is where the DNA is located.
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where does protein synthesis occur?
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ribosomes--which are located in the cytosol.
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what is the target for antibiotics to kill bacteria?
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ribosomes. they inhibit the bacteriums protein synthesis. These antibiotics only kill cells that have specific ribosome sed. rate.
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what is the sed. rate where streptomycin and gentamycin are effective in killing bacteria?
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30S
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erythromycin and chloramphenicol
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kills bacteria with sed rate of 50S
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how do scinentists id bacteria?
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Inclusions (granules)
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