If liver is dead then why are the enzymes still active?

Question

Such as why does it react with H2O2?

Answer 1

Hi. Enzymes are not alive.

Answer 2

Liver cells are made up of a complex balance of proteins and membranes that need constant oxygen input to supply the energy needed to run many of the enzymes within the cell. When the oxygen supply system (and waste removal system) fails, that is, when the organism dies, the proteins don't immediately fall apart. Some can remain quiescent in side the cells for quite some time. They won't be active, because they won't be getting all the requirements for them to be active.

Enzymes can be kept active long after the cells die, if they are purified from the cells soon after the organism dies, and if they are kept stored at very low temperatures in a buffer (a salt solution that doesn't change pH very easily) and, for some reason, glycerol. To allow them to function, they would require all substrates and/or energy inputs (such as ATP). Many enzymes are sold commercially to help biology researchers perform their research.