||These are secreted by endocrine glands.
||These are secreted by exocrine glands.
||They are poured directly into the blood stream.
||They are released through the ducts.
||They have low molecular weight.
||They have high molecular weight.
||They can diffuse through the cell membrane.
||They cannot diffuse through the cell membrane.
||May act on the different site other than where they are produced.
||May act at the site of their origin or may pass to their site of action through ducts.
||Hormone regulated processes are not reversible.
||Enzymes regulated processes are reversible.
||Known as the chemical messenger of the body.
||They don’t carry the messages.
||They may be aminoacids derivatives, peptides, proteins or steroids in nature.
||They are always proteinaceous in nature.
||Produced in less quantity.
||Produced in more quantity.
||Involved in metabolic activities.
||Involved in digestion.
||Reaction is slow.
||Reaction is fast.
||Tend to change with age.
||Do not change with age.
||Excess or reduced levels cause diseases.
||Insufficiency causes diseases
||They are not known as catalyst.
||They are known as biological catalyst.
||Have diverse functions in controlling growth, development, and reproduction.
||Have unique or essential functions in the body.
||Not affected by temperature and pH.
||Affected by temperature and pH.
||Controlled by feedback (secretion or production) mechanism.
||Controlled by hormone, physical or chemical effects.
||e.g: growth hormone, ACTH, prolactin, parathormone, androgen, etc.
||e.g: lipase, catalase, hydrolase, amylase, etc.