Biosensors are devices that use a biological recognition element kept in direct contact with a signal transducer (IUPAC definition)
A biomediator is a biological sensing element (an enzyme, a tissue, living cells, etc.) that interacts with specific analytes producing various kinds of signals.
Mainly in environmental monitoring, in the biomedical sector, in food analysis, and in safety.
All types, but mainly enzymatic and photosynthetic
Mainly photosynthetic and enzymatic biomediators ( see products)
It depends on various factors (e.g. type of biomediator, storage conditions). See products