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Cell Cultivations

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

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

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Cell Cultivations
The protoplast can be used to

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

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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

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

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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
Microaerophillic bacteria
all of these
Lactobacilli

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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

cellulose
none of these
succinate
certain antibiotics

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Cell Cultivations
Radical shifts in pH can be prevented by incorporating

any of these
a buffer
an oxidizing agent
a reducing agent

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