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Difference between Enzymes and Hormones

May 27, 2023
written by Sidra Batool

The main difference between enzymes and hormones is that enzymes are biological catalysts that increase the speed of biochemical reactions without undergoing any changes themselves, whereas hormones are molecules produced by organisms that transmit messages to other organs or tissues, triggering specific cellular reactions.

image showing Difference between Enzymes and Hormones

Enzyme vs. Hormone

Here are the main difference between enzymes and hormones:

CharacterEnzymesHormones
DefinitionEnzymes are biological catalysts that increase the speed of biochemical reactions without any changes.Hormones are molecules like steroids (testosterone/estrogen) or peptides (insulin) produced by a part of an organism and send messages to other organs or tissues for cellular reactions.
Chemical NameBiological CatalystChemical Messengers
Molecular WeightMacromolecules, always high molecule weight.Hormones have comparatively low molecular weight than enzymes.
Activity PerformedPerforms at the place of origin, i.e., inside the cell.Performs at some distance, i.e., target organ from glands.
ReutilizationEnzymes can be reused.Hormones cannot be reused.
FormationFormation is in exocrine glands.Formation is in endocrine glands.
SpecificationsIt depends on functions performed by the substrate.It depends on positive and negative feedback by target cells.
Circulatory SystemIntracellular or some ducts.Blood Stream.
Chemical CompositionGenerally Proteins.Polypeptides, Steroids, Amines.
Producer CellsSalivary glands, cells in the stomach, pancreas, and glands in the small intestine.Pituitary glands, Thyroid glands, Thymus glands, Adrenal glands, Pancreas.
TranslocationNo translocation.Shows polar translocation.
Reacting TimeEnzymes react quickly.Some hormones react quickly while some react slowly.
Reaction TypeReversible.Irreversible.
ConcentrationReaction increases with an increase in concentration.Hormone effects depend on the deficiency or excess of their concentration in the body.