|
|
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.
Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
The average office desk has 400 times more bacteria on it than a toilet.
Medication errors are three times higher among children and infants than with adults.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
![At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da](https://biology-forums.com/gallery/47/medium_6_24_08_15_12_36_52_224132038.jpeg)
![Taking an interesting course can help keep your brain active. These seniors are taking a class in ...](https://biology-forums.com/gallery/47/medium_665046_09_03_17_7_52_23_267152331.jpeg)