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Cell Cultivations

Cell Cultivations
Thiobacillus thiooxidans has an optimum pH of

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

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Cell Cultivations
The protoplast can be used to

all of these
create plant hybrid
study plant viral infections
modify genetic information

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Cell Cultivations
Which of the following is an abiotic elicitors?

Heavy metal ions
All of these
UV irradiation
Osmotic shock

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Cell Cultivations
Stringent anaerobes can be grown in a media by taking special measure as

passing through oxygen-free nitrogen
boiling the media for several minutes
addition of cysteine
any of these

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

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

Viscosity
Cell dry weight
Heat evolution
Nutrient composition

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