Acetyl group known as paracetamol), and acetylsalicylic acid (better known as aspirin). The introduction of an acetyl group into a molecule is called acetylation. In biological organisms, acetyl groups are commonly transferred from acetyl-CoA to other organic molecules. Acetyl-CoA is an intermediate both in the biological synthesis and in the breakdown of many organic molecules. Acetyl-CoA is also created during the second stage of cellular respiration, the Krebs Cycle, by the action of pyruvate dehydrogenase on pyruvic acid. Histones and other proteins are often modified by acetylation. For example, on the DNA level, histone acetylation by acetyltransferases (HATs) causes an expansion of
What? Where? When? What? Where? When? What? Where? When? (, translit. "Chto? Gde? Kogda?") is an intellectual game show well known in Russian-language media and other CIS states since the mid-1970s. Today it is produced for television by TV Igra on the Russian Channel One and also exists as a competitive game played in clubs organized by the World Association of Clubs. Over 21,000 teams worldwide play the sport version of the game, based on the TV show. Throughout the game, a team of 6 experts attempts to answer questions sent in by viewers. For each question, the time limit is 1 minute.