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32 Cards in this Set
- Front
- Back
1 x 10⁰ = |
1
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1 x 10² =
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10 x 10 = 100
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1 x 10¹ =
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10
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1 x 10³ =
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10 x 10 x 10 = 1,000
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1 x 10⁶ =
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10 x 10 x 10 x 10 x 10 x 10 = 1,000,000
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1 x 10⁷ =
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10,000,000
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1 x 10⁹ =
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1,000,000,000
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1 x 10⁻¹ =
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1/10 = 0.1
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1 x 10⁻² =
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1/100 = 0.01
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1 x 10⁻³ =
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1/1,000 = 0.001
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1 x 10⁻⁶ =
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1/1,000,000 = 0.000001
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1 x 10⁻⁷ =
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1/10,000,000 = 0.0000001
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1 x 10⁻⁹ =
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1/1,000,000,000 = 0.000000001
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To see slight or barely discernible turbidity (cloudiness) in a broth media, there would have to be just more than
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10⁷ organisms/mL (milliliter) or 10⁸ organisms/10ml
10⁸ = 100 million bacterial cells in one test tube |
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In a tube showing heavy turbidity (cloudiness) one would expect to see ...
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10¹⁰ organisms/ml or 10¹¹ organisms/10ml. 10¹¹ = 100 billion bacterial cells in one test tube.
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To observe the first signs of growth on a solid medium such as an agar plate, ...
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10⁶ or a million bacterial cells would have to be present.
These very small or pinpoint colonies are referred to as punctiform colonies |
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1 m = ___ mm = ___ µm = ___ nm
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1 m = 10³ mm = 10⁶ µm = 10⁹ nm
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1 m = ___ mm
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1 m = 1000 mm = 10³ mm
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1 mm = ___ µm
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1 mm = 1000 µm = 10³ µm
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The average bacterial organism is approximately is
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1 µm in diameter or 1 x 10⁻⁶m
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Our light microscopes can resolve down to ___. This allows visualizing bacterial organisms using these light microscopes.
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0.2 µm
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A bacterial cell is equivalent in size to a eukaryotic mitochondrion.
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1 µm = 1000 nm = 10³ nm
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1 mm = ___ m
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10⁻³ m
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1 µm = ___ mm = ___ m
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1 µm = 10⁻³ mm = 10⁻⁶ m
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1 nm = ___ µm = ___mm = ___ m
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1 nm = 10⁻³ µm = 10⁻⁶ mm = 10⁻⁹ m
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10⁻¹ µm = ___ µm = ___ nm
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10⁻¹ µm = 0.1 µm = 100 nm
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ubiquitous
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omnipresent or everywhere
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colony
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a macroscopic visible growth of microorganisms on a solid culture medium, which may be derived from one or more cells. To visualize a colony, there must be at least 10⁶ cells. A pinpoint colony is referred to as a punctiform colony
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nosocomial infection
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an infection derived from a clinical/hospital setting
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fastidious organisms
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organisms that have complex nutritional requirements. Members of the genus Streptococcus and Neisseria are oftentimes fastidious
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resolution
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the ability to distinguish fine detail; also called resolving power
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fomites
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inanimate objects capable of absorbing, retaining and transmitting infectious agents
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