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Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Thyroid conditions may make getting pregnant impossible.

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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Video: Gastrin (protein digestion)

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