« previous next »
« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Hydrogen bonding of water with itself and with other compounds Hydrogen bonding of water with itself and with other compounds
The most complete Victoriapithecus skull from Maboko Island, Kenya. The most complete Victoriapithecus skull from Maboko Island, Kenya.
James Madison was a key figure at the Constitutional Convention of 1787 in Philadelphia. He not only James Madison was a key figure at the Constitutional Convention of 1787 in Philadelphia. He not only
water bear water bear
The complete oxidation of 1 mole of glucose generates about 30–32 moles of ATP synthesized from ... The complete oxidation of 1 mole of glucose generates about 30–32 moles of ATP synthesized from ...
Hydrozoan. Hydra, a freshwater species capturing and digesting a water flea. Hydrozoan. Hydra, a freshwater species capturing and digesting a water flea.
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library