Hormones can be divided into three chemical groups

There is enormous diversity in the chemical structure of hormones, but most of them can be divided into three groups:

► Steroid hormones (derivatives of the steroid cholesterol; e.g., testosterone)

► Amines (derivatives of the amino acid tyrosine; e.g., thyroxine)

Most hormones are peptides or proteins. They are water-soluble and therefore easily transported in the blood, but they cannot easily pass through lipid-rich cell membranes. Therefore, peptide and protein hormones are packaged in vesicles in the cells that make them and released by exocytosis.

Steroid hormones are lipid-soluble and can easily dissolve in and pass through cell membranes. Therefore, steroid hormones are not packaged in vesicles; instead, they simply diffuse out of the cells that make them as they are synthesized. Since steroid hormones are not soluble in the blood, they are transported in the blood bound to carrier proteins.

Some amine hormones are water-soluble and others are lipid-soluble; thus, their mode of release differs accordingly.

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Responses

  • ROSALINDA
    Can steroid hormones simply diffuse?
    8 years ago
  • sam
    What hormones are lipid soluble and can pass through cell membranes?
    8 years ago
  • Violet Mitchell
    Which chemical groups can hormones be divided?
    8 years ago
  • Kenzie
    Can lipids derivative hormones pass through cell membrane?
    7 years ago
  • Dino
    Which of the three groups of hormones are soluble in blood plasma without a carrier protein?
    7 years ago
  • simone
    How are hormones divided into categories?
    6 years ago
  • TRAVIS
    What hormone can pass the membrane cell?
    6 years ago
  • caden docherty
    Which 3 chemical catergories are hormones divided into?
    5 years ago
  • Mario
    Why the structure are divided into tree groups?
    3 years ago
  • Amalda
    How are hormones divided by function?
    2 years ago

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