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Cell Cultivations

Cell Cultivations
Radical shifts in pH can be prevented by incorporating

a reducing agent
an oxidizing agent
any of these
a buffer

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

Viscosity
Heat evolution
Nutrient composition
Cell dry weight

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Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

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

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

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Cell Cultivations
Anchorage -dependent cells require

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

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Cell Cultivations
Callus cultures are amorphous cell aggregates arising from the unorganized growth of explants on an

solid or liquid medium
aseptic solid nutrient medium
solid nutrient medium
liquid medium

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