BRAIN TEASERS

enter your answer and press button OK

Find the area of the shaded ...

Find the area of the shaded octagon (A=?, a=1999) and express result to the accuracy of 3 decimal.

Correct answers: 22

The first user who solved this task is Allen Wager.

#brainteasers #math #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

Hello, Doctor, Doctor, Doctor...

Patient: "Hello, Doctor, Doctor, Doctor, help me, help me, help me! When I do something, I repeat it three times, three times, three times. I'm terribly tired, terribly tired, terribly tired. Although my wife is delighted, delighted, delighted."

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...

DNA

In 1952, Alfred Hershey and Martha Chase published a report confirming DNA holds hereditary data. Their experiment used the T2 bacteriophage, which, like other viruses, is just a crystal of DNA and protein. It can reproduce when inside a bacterium such as E. coli. When the new T2 viruses are ready to leave the host E. coli cell (and go infect others), they burst the E. coli cell open, killing it (hence the name "bacteriophage"). Hershey and Chase were seeking an answer to the question, "Is it the viral DNA or viral protein coat (capsid) that is the viral genetic code material which gets injected into the E. coli?" Their results indicated that the viral DNA, not the protein, is its genetic code material.

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.