Question
Define hormone. State the characteristics of the hormone.
Answer
Hormone: Chemical messengers secreted by glands into the bloodstream to regulate various physiological processes.
Characteristics of Hormones:
- Chemical nature: Usually proteins or steroids.
- Mode of transport: Circulate through the bloodstream.
- Target specificity: Act on specific target cells or organs.
- Regulation: Controlled by feedback mechanisms.
- Effects: Regulate growth, development, metabolism, and other bodily functions.