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What has many keys, but can'...

What has many keys, but can't even open a single door?

Correct answers: 47

The first user who solved this task is Djordje Timotijevic.

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Mo Mandel: Bought But Never Used

Our high school coach got caught with meth at a game. And he told the school that he had bought it, but never used it. Ive never bought drugs and not used them. Right? Theyre not condoms.

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Fritz Albert Lipmann

Born 12 Jun 1899; died 24 Jul 1986 at age 87.German-American biochemist who shared (with Sir Hans Krebs) the 1953 Nobel Prize for Physiology or Medicine for the discovery of coenzyme A, an important catalytic substance involved in the cellular conversion of food into energy. Coenzyme A is a compound with a rather small molecule, which, when united with the enzyme-protein, acquires the property of binding acetic acid. Acetic acid is normally quite unreactive but when bound in this way it becomes labile and reactive and represents the previously mystical 2-carbon compound which combines with a 4-carbon compound to form citric acid. A new way for the transmission of energy in the cell was demonstrated by this discovery.

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