« previous next »
« previous next »
 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

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

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.

Four types of cellular responses to positional information in animals. Four types of cellular responses to positional information in animals.
Cross-pollination and selfing are two types of crosses Cross-pollination and selfing are two types of crosses
The Increasing Cost of Health Care, 1960–2010 The Increasing Cost of Health Care, 1960–2010
Conscientiousness is negatively correlated with a number of health-related behaviors. The higher the ... Conscientiousness is negatively correlated with a number of health-related behaviors. The higher the ...
Summary of T-Cell Types Summary of T-Cell Types
Three Types of Lipids The three types of lipids vary in structure Three Types of Lipids The three types of lipids vary in structure
Video: Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library