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24 Cards in this Set
- Front
- Back
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Average Cell Size
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1 -3 micrometers
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Range of cell Size
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.2-100 micrometers
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the 5 Shapes of Bacteria are
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1) Rod
2)coccus 3)helical 4)square/cube 5)Irregular |
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Rod =______= bacillus
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cylindrical
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coccus=_______
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spherical
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helical=_____=much variation
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spirillum
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Cells can divide in what types of planes
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one,two,three, and all planes
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cells that divide in one plane are called
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streptococcus, streptobacillus, or diplococcus
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These type of bacteria divide in only ONE plane
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Rods
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What do you get when cells divide in 2 planes
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Sheets of cells called tetrads
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What do you get when cells divide in 3 planes
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cube shaped packets of cells in sarcina arrangement (8 coccus cells)
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What do you get when cells divide in al planes
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irregular clusters of cells called staph arrangement
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The fine structure of procaryotic cells can be observed with....
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an electron microscope
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the gross morphology of a cell can be observed with ....
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a light microscope
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All bacteria have cell walls except for...
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mycoplasmas
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The functions of the cell wall are to give it shape and protect it from physical, chemical, and osmotic pressure.
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True
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Peptidoglycan is composed of what?
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cross linked repeating units of peptidoglycan
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name 2 types of sugars
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NAM
NAG |
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NAM
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N- acetyle muramic acid
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NAG
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N-acetyl glucosamine
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Every organism on the planet has peptidoglycan
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FALSE- only bacteria
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Name the constituents of cell wall
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teichoic acid, lipoproteins, lipopolysaccharides, and proteoglycan
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what joins the NAM structure together?
NAM.......NAM...... l l NAG NAG |
.......= little peptide amino acids
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many antibiotics work by
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selective toxicity, working by preventing the cross bridge formation of the peptides
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