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Cell Cultivations

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

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

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Cell Cultivations
Anchorage -dependent cells require

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

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Cell Cultivations
The protoplast can be used to

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

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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

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

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

Heat evolution
Nutrient composition
Cell dry weight
Viscosity

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Cell Cultivations
Semi-solid media, prepared with agar at concentrations of 0.5% or less are useful for the cultivation of

all of these
E.coli
Lactobacilli
Microaerophillic bacteria

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