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Cell Cultivations

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

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

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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

E.coli
all of these
Lactobacilli
Microaerophillic bacteria

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

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

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

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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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Cell Cultivations
Suspension cultures consist of cells and cell aggregates, growing dispersed in

solid nutrient medium
liquid medium
solid or liquid medium
none of these

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