|
|
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.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
![The Green Pygmy Goose (Nettapus pulchellus) is a small perching duck which breeds in southern New Gu](https://biology-forums.com/gallery/47/medium_27817_24_04_12_3_08_44.png)
![To broaden and lift the quadriceps muscles, place the heels of the hands together directly on top of ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_05_47_33305645.jpeg)