Beyoncé has received praise for her stage presence and voice during live performances. Jarett Wieselman of the New York Post placed her at number one on her list of the Five Best Singer/Dancers. According to Barbara Ellen of The Guardian Beyoncé is the most in-charge female artist she's seen onstage, while Alice Jones of The Independent wrote she "takes her role as entertainer so seriously she's almost too good." The ex-President of Def Jam L.A. Reid has described Beyoncé as the greatest entertainer alive. Jim Farber of the Daily News and Stephanie Classen of Star Phoenix both praised her strong voice and her stage presence.
Who has said that Beyoncé is the best entertainer alive?
L.A. Reid

In August, the couple attended the 2011 MTV Video Music Awards, at which Beyoncé performed "Love on Top" and started the performance saying "Tonight I want you to stand up on your feet, I want you to feel the love that's growing inside of me". At the end of the performance, she dropped her microphone, unbuttoned her blazer and rubbed her stomach, confirming her pregnancy she had alluded to earlier in the evening. Her appearance helped that year's MTV Video Music Awards become the most-watched broadcast in MTV history, pulling in 12.4 million viewers; the announcement was listed in Guinness World Records for "most tweets per second recorded for a single event" on Twitter, receiving 8,868 tweets per second and "Beyonce pregnant" was the most Googled term the week of August 29, 2011.
What was the most searched term in week of Aug 29, 2011?
Beyonce pregnant

Genes are regulated so that they are expressed only when the product is needed, since expression draws on limited resources.:7 A cell regulates its gene expression depending on its external environment (e.g. available nutrients, temperature and other stresses), its internal environment (e.g. cell division cycle, metabolism, infection status), and its specific role if in a multicellular organism. Gene expression can be regulated at any step: from transcriptional initiation, to RNA processing, to post-translational modification of the protein. The regulation of lactose metabolism genes in E. coli (lac operon) was the first such mechanism to be described in 1961.
At which step can gene expression be regulated?
at any step