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Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Negative feedback as a mechanism by which homeostatic control systems operate. Negative feedback as a mechanism by which homeostatic control systems operate.
Negative feedback control of the female reproductive hormones Negative feedback control of the female reproductive hormones
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
A negative feedback loop. A negative feedback loop.
A Negative Afterimage A Negative Afterimage
Negative and positive feedback loops Negative and positive feedback loops
Video: Normal and abnormal blood pH

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