MATH PUZZLE: Can you replace...
[2511] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 272 - The first user who solved this task is Roxana zavari
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 272
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
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I Am Going To Shop

"Cash, check or charge?" I asked after folding items the woman wished to purchase. As she fumbled for her wallet I notice a remote control for a television set in her purse.
"Do you always carry your TV remote?" I asked.
"No," she replied. "But my husband refused to come shopping with me, so I figured this was the most evil thing I could do to him."
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David Keilin

Died 27 Feb 1963 at age 75 (born 21 Mar 1887).Russian-British biochemist who discovered cytochromes, as enzymes critical to the cell's use of oxygen (1923). His career began as an entomologist studying the life cycles of flies. While studying the absorption spectrum of the muscles of the horse botfly, that he noticed four absoption bands that disappeared when the cell suspension was shaken in air, but reappeared afterwards. He had found a respiratory enzyme. He named it cytochrome, and began a thorough investigation of its role in cellular respiration. Like haemoglobin, the cytochrome enzyme contains iron. Cytochrome is a pigment found in some cells, such as bacteria and yeast. He studied also catalase and peroxidase which are also iron-containing enzymes with a role involving oxygen.
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