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Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

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The average adult has about 21 square feet of skin.

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Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Passive and active transport. Passive and active transport.
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The active site cleft of lysozyme The active site cleft of lysozyme
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Movement of fluids in the body is accomplished by A. osmosis, B. diffusion, or C. active transport Movement of fluids in the body is accomplished by A. osmosis, B. diffusion, or C. active transport
Video: Junction Types - Tight and Adherens Junctions

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