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Cell Cultivations

Cell Cultivations
For most bacteria, the optimum pH for growth lies between

5.5-6.5
6.5-7.5
4.5-5.5
3.5-4.5

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Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

0.5-6.0
2.0-3.5
6.5-7.5
9.0-9.5

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Cell Cultivations
The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of

400-500nm
600-700nm
500-600nm
300-400nm

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Cell Cultivations
Radical shifts in pH can be prevented by incorporating

an oxidizing agent
a buffer
any of these
a reducing agent

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Cell Cultivations
Semi-solid media, prepared with agar at concentrations of 0.5% or less are useful for the cultivation of

Microaerophillic bacteria
E.coli
all of these
Lactobacilli

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Cell Cultivations
The size of a single plant cell is usually within the range of

20-40μm in diameter and 100-200μm long
10-20μm in diameter and 25-100μm long
40-60μm in diameter and 200-300μm long
60-80μm in diameter and 300-400μm long

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