Which of the following can be used as a metabolic control me

Which of the following can be used as a metabolic control mechanism?

1- Regulation of enzyme degradation

2- Enzyme compartmentation

3- Covalent modification of an enzyme

4- Action of hormones

5- All of the above

Solution

5. all of the above

Metabolic control mechanisms include extracellular signals (either hormonal, neuronal, cytokines or growth factors)- which change transctiption, degradation, potein modification and regulatory protein availability. Covalent modification of enzymes also used as a metabolic control mechanism