Dictionary » A » Alkaloid



(Science: chemistry, pharmacology) One of a large group of nitrogenous substances found in naturally in plants. They are usually very bitter and although the plant may be poisonous, many have extracts that are pharmacologically active.

Examples are atropine, caffeine, coniine, morphine, nicotine, quinine, strychnine. The term is also applied to synthetic substances which have structures similar to plant alkaloids, such as procaine.

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An interesting essay I need help with

... movie. While canoeing along with your dream date, you were shot in the leg with a curare-painted dart by a local native. Curare is a toxic plant alkaloid that binds tightly to acetylcholine receptors in skeletal muscle, blocking the binding of acetylcholine, but does not in itself activate the ...

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by kimmay818
Fri Oct 08, 2010 5:04 am
Forum: Human Biology
Topic: An interesting essay I need help with
Replies: 0
Views: 4086

melonin question

melonin is an alkaloid produced by a type of watermelon(no, I'm not joking... it actually exists :lol: )

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by MrMistery
Fri Jan 25, 2008 3:20 am
Forum: Cell Biology
Topic: melonin question
Replies: 4
Views: 6703

The Vibrios!!

Generally, I like them, although I'm not quite fond of Vibrio cholerae. Members of this family also synthesize tetrodotoxin, an ancient marine alkaloid and powerful neurotoxin. Always make sure you have a large dose of tetracycline in case anything goes wrong. Vibrio fischeri and Vibrio harveyi ...

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by Condraz23
Tue Dec 19, 2006 3:49 am
Forum: Microbiology
Topic: The Vibrios!!
Replies: 5
Views: 3485

"Twenty questions"-biology game

Plant cells produce alkaloids too? Alkaloids is ONE of this substance you are making me have to pick my brain :evil: :lol: : amines? no that is the same as alkaloid not producer of. :? IDK :? :(

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by Linn
Mon Oct 30, 2006 2:56 am
Forum: General Discussion
Topic: "Twenty questions"-biology game
Replies: 771
Views: 375638

The Fiber Disease

... have found many metals, barium, aluminum, etc. and gold particles are present in nanoparticles. Also, blood cells were found. I think PH level, alkaloid level of the earths surface is part of this, so then would depend on what is put in the little tubes that produce these trails, not contrails, ...

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by Skytroll
Fri Oct 27, 2006 5:11 pm
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6243061
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