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Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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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.

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sperm cell sperm cell
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If nondisjunction (the improper separation of chromosomes) occurs during meiosis, the eggs or sperm If nondisjunction (the improper separation of chromosomes) occurs during meiosis, the eggs or sperm
Video: Enzyme structure - Properties of enzymes

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