ABSTRACT
Heavy metals belong to the group of substances, which on one hand include chemical elements benefi cial and essential for organism function but on the other hand elements also with an unascertained biological function which predominantly cause toxic effects in many organisms. Numerous research facilities aim their attention at direct effects of heavy metals in various species. The toxicity of heavy metals is related to the bonding possibility with different types of biomolecules, which alter their prevalent biological function and, thus, damage life-sustaining biochemical processes. As a result, eventually death of the organism may be observed.
