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Did you know?

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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

From space earth shows itself as a planet covered mostly by water. From space earth shows itself as a planet covered mostly by water.
Lunokhod 1 (lit. moonwalker), the first successful space rover. Lunokhod 1 (lit. moonwalker), the first successful space rover.
The Parallax of a Nearby Object in Space The Parallax of a Nearby Object in Space
How people use space as they interact is studied by sociologists who have a microsociological focus. ... How people use space as they interact is studied by sociologists who have a microsociological focus. ...
Separate the metatarsals. Create space between the metatarsals by holding onto the sides of the foot ... Separate the metatarsals. Create space between the metatarsals by holding onto the sides of the foot ...
A space probe approaches a planet, taking measurements as it goes. If it detects a potential ... A space probe approaches a planet, taking measurements as it goes. If it detects a potential ...
Video: What is Cholesterols? Introduction to Lipoproteins

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