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

Heat evolution
Cell dry weight
Nutrient composition
Viscosity

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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

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

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

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

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