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Cell Cultivations

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

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

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Cell Cultivations
Suspension cultures consist of cells and cell aggregates, growing dispersed in

solid nutrient medium
none of these
liquid medium
solid or liquid medium

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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

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

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Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

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

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

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

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Cell Cultivations
Radical shifts in pH can be prevented by incorporating

any of these
a reducing agent
a buffer
an oxidizing agent

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