Cell Cultivations
Which of the following is the necessary step for cultivating the microorganisms?

Sterilizing in order to eliminate all living microorganisms in vessel
All of these
Inoculating the microorganisms in the prepared medium
Preparing a culture medium for the growth of microorganisms

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Cell Cultivations
Balanced growth is defined as

cultures undergoing balanced growth while maintaining a constant chemical composition
balancing the growth while changing the nutrient composition
balancing the growth while controlling the temperature
balancing the growth while controlling the pH

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Cell Cultivations
The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because

All of these
they lack murein in their cell wall
they contain ether-linked isoprenoids in their plasma membrane
they contain 80S, as opposed to 70S, ribosomes

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