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Did you know?

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.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Relative Size of the Body’s Fluid Compartments Relative Size of the Body’s Fluid Compartments
Canada's forest regions Canada's forest regions
Other Body Systems Help You Use Digested Nutrients Body systems Other Body Systems Help You Use Digested Nutrients Body systems
Dermatomes of body, posterior view Dermatomes of body, posterior view
Noncoding regions include all the 5′UTR, 3′UTR and other noncoding RNA regions. UTR = ... Noncoding regions include all the 5′UTR, 3′UTR and other noncoding RNA regions. UTR = ...
Proteins are body-building nutrients Proteins are body-building nutrients
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