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Cell Cultivations

Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

0.5-6.0
2.0-3.5
9.0-9.5
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

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

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

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Cell Cultivations
The isolation of the gonorrhoea - causing organisms, Neisseria gonorrhoeae,from a clinical specimen is facilitated by the use of media containing

certain antibiotics
none of these
cellulose
succinate

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Cell Cultivations
Anchorage -dependent cells require

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

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

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

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