Those are restriction enzymes, a kind of endonucleases. Some wellknown ones are EcoRI, HindIII or BamHI

Degradative reactions can cause cellular death. If the resulting factor is not treated appropriately the death of the organism can occur.

it is a plasmid which utilizes secondary metabolites..........eg.P.putida

Ketones

An example of spontaneous decomposition is that of hydrogen peroxide, which will slowly decompose into water and oxygen: : 2H2O2 → 2H2O + O2 thus it would be a degradative reaction