Practice question
Question
If the partitioning coefficient (K) of a solute is 20 when it is extracted by an organic solvent from culture medium, what is the amount of solvent required per litre of culture medium to extract 90% of the solute in a single equilibrium stage?
Explanation
In microbiology, microbial physiology dictates that growth regulation and host interactions follow molecular programs. Therefore 0.45 litre is correct as it corresponds to prokaryotic and viral strategies, supported by mechanistic studies and conserved across related systems.
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