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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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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Lavoisier's pioneering direct calorimetry method of measuring BMR. Lavoisier's pioneering direct calorimetry method of measuring BMR.
Inhibition as a primary method of succession in the marine intertidal zone. Inhibition as a primary method of succession in the marine intertidal zone.
Performing Venipuncture Using the Vacutainer Method Performing Venipuncture Using the Vacutainer Method
Performing Venipuncture Using the Vacutainer Method Performing Venipuncture Using the Vacutainer Method
Linear programming problems using the simplex method. Linear programming problems using the simplex method.
Offset Method Plot of Land with Offset Lines Offset Method Plot of Land with Offset Lines
Video: ATPase function - membrane transport, contractile proteins and synthesis

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