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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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The longest a person has survived after a heart transplant is 24 years.

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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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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.

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Pathogenic microorganisms include (A) bacteria, (B) viruses, (C) protozoa, and (D) helminths. Pathogenic microorganisms include (A) bacteria, (B) viruses, (C) protozoa, and (D) helminths.
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A transmission electron micrograph of cytokinesis in a cross section of a dividing cell A transmission electron micrograph of cytokinesis in a cross section of a dividing cell
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Video: What are Taste Receptors? How Does it Work? Animation

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