Notes from NEET topper
Types of Hormones
1. Peptide Hormones:
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Made of amino acids.
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Examples: Insulin, growth hormone.
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Action: Bind to cell surface receptors, triggering a cascade of intracellular events.
2. Steroid Hormones:
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Derived from cholesterol.
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Examples: Estrogen, testosterone.
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Action: Penetrate cell membranes and bind to intracellular receptors, affecting gene expression.
3. Amine Hormones:
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Derived from single amino acids.
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Examples: Thyroid hormones, adrenaline.
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Action: Can work like peptide hormones or steroid hormones depending on their nature.
