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Cell Cultivations

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

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

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Cell Cultivations
The protoplast can be used to

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

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

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

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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

Microaerophillic bacteria
all of these
Lactobacilli
E.coli

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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 not an indirect method for the measurement of cell mass?

Nutrient composition
Cell dry weight
Viscosity
Heat evolution

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