Biological activity
Biological activity
Biological activity (pronunciation: /baɪəˈlɒdʒɪkəl ækˈtɪvɪti/) refers to the specific effects that a substance has on living organisms, cells, or processes.
Etymology
The term "biological activity" is derived from the Greek words "bios" meaning "life" and "logos" meaning "study", combined with the English word "activity" which originates from the Latin "activus", meaning "active or engaged".
Definition
Biological activity is the effect of a substance on a living organism, tissue, or cell. This can include effects on metabolic processes, cell division, or interactions with receptors in the body. The substance causing the effect can be a drug, a toxin, a hormone, or any other chemical that can interact with the organism's biological processes.
Related Terms
- Pharmacodynamics: The study of the biochemical and physiological effects of drugs and their mechanisms of action.
- Pharmacokinetics: The study of how an organism affects a drug, including absorption, distribution, metabolism, and excretion.
- Bioavailability: The proportion of a drug or other substance which enters the circulation when introduced into the body and so is able to have an active effect.
- Agonist: A substance which initiates a physiological response when combined with a receptor.
- Antagonist: A substance that interferes with or inhibits the physiological action of another.
See Also
External links
- Medical encyclopedia article on Biological activity
- Wikipedia's article - Biological activity
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