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Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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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.

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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

The thick bark of the cork oak of the Mediterranean region protects the tree from fire. The thick bark of the cork oak of the Mediterranean region protects the tree from fire.
Adults in late middle adulthood frequently look forward to spending more time with their partner Adults in late middle adulthood frequently look forward to spending more time with their partner
An H II Region An H II Region
Organization of the CCR5 gene in region 3p21.3 Organization of the CCR5 gene in region 3p21.3
CAP–cAMP complex binding to the CAP binding region CAP–cAMP complex binding to the CAP binding region
General strategies of forward and reverse genetics General strategies of forward and reverse genetics
Video: Steps of glucose catabolism

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