What is difference between hormone and enzyme ?
A few more differences between enzymes and hormones are as follows :-
Enzymes:-
- All enzymes are proteins, except few (composed of RNA, e.g, hammerhead RNA)
- They are macromolecules with higher molecular weight
- They are non-diffusible through cell membrane
- They either act intracellularly or carried by some ducts to another site
- Always act as biological catalysts and increases the rate of metabolic physiological processes.
- They catalyze reversible or irreversible reactions.
- Reaction rate increases with increase in their concentration up to a limit.
- They act quickly
Hormones :-
- They may be proteins, amines or steroids
- They have only low molecular weight
- They are diffusible through cell membrane
- Generally carried by blood to a target organ
- They may be either excitatory or inhibitory in their action
- Hormone controlled reactions are not reversible
- Deficiency or overproduction of hormone causes metabolic disorders or diseases
- Some hormones are quick acting, while some are slow acting with a lag period.