BRAIN TEASERS

enter your answer and press button OK

What jumps when it walks and s...

What jumps when it walks and sits when it stands?

Correct answers: 91

The first user who solved this task is Djordje Timotijevic.

#brainteasers #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

An elderly couple was attendin...

An elderly couple was attending church services.
About halfway through she leans over and says to her husband, "I just silentlypassed gas - what do you think I should do?"
He replied, "Put a new battery in your hearing aid."

Jokes of the day - Daily updated jokes. New jokes every day.

Follow Brain Teasers on social networks

Brain Teasers

puzzles, riddles, mathematical problems, mastermind, cinemania...

Edward A. Doisy

Born 13 Nov 1893; died 23 Oct 1986 at age 92.Edward Adelbert Doisy was an American biochemist who shared (with Henrik Dam) the 1943 Nobel Prize for Physiology or Medicine for his isolation and synthesis of vitamin K, a substance that encourages blood clotting (1939), used in medicine and surgery. With the embryologist Edgar Allen (1922-34), he developed assay techniques that facilitated research on sex hormones. Doisy and his associates isolated the sex hormones estrone (theelin, 1929; the first estrogen to be crystallized), estriol (theelol, 1930), and estradiol (dihydrotheelin, 1935). In 1936-39 he isolated two forms of the vitamin, (K1 from lucerne seed and K2 from fish meal, in a pure crystalline form), determined their chemical structures, and synthesized the vitamin.«

This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.