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Cell Cultivations

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

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

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

solid nutrient medium
aseptic solid nutrient medium
solid or liquid medium
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

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

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Cell Cultivations
Anchorage -dependent cells require

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

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Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

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

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Cell Cultivations
Which of the following is an abiotic elicitors?

Heavy metal ions
Osmotic shock
All of these
UV irradiation

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