The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
Did you know?
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.
Basic energy of a human life
Human Skeleton
Respiration in human
Baby Gorilla versus Baby Human
Structural organization of chromatin in the human centromere
