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Did you know?
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.