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Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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The average adult has about 21 square feet of skin.

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The FDA recognizes 118 routes of administration.

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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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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.

Types of active transport. Types of active transport.
Electron atomic and molecular orbitals Electron atomic and molecular orbitals
Cyclic electron flow. Cyclic electron flow.
Initial and final methanol concentrations Initial and final methanol concentrations
Major inner membrane transport systems for respiratory substrates and products Major inner membrane transport systems for respiratory substrates and products
Transport Mechanisms: Antiporter Transport Mechanisms: Antiporter
Video: Semidiscontinuous DNA replication

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