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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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 80S, as opposed to 70S, ribosomes
they contain ether-linked isoprenoids in their plasma membrane

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