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Cell Cultivations

Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

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

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Cell Cultivations
Anchorage -dependent cells require

wettable surface for growth
dry surface for growth
nothing to do with the surface
either (a) or (b)

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Cell Cultivations
Which of the following is not an indirect method for the measurement of cell mass?

Heat evolution
Viscosity
Nutrient composition
Cell dry weight

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Cell Cultivations
Which of the following is an abiotic elicitors?

Osmotic shock
UV irradiation
All of these
Heavy metal ions

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

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

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

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