Word: occurred
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Dates: during 1990-1999
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When foods like turkey, bread and caramel are heated, proteins bind with sugars, causing the surface to darken and, in some cases, turn soft and sticky. In the 1970s, biochemists hypothesized that the same reaction might occur in the bodies of people suffering from diabetes, as excess glucose combined with proteins in the course of metabolism. When sugars and proteins bond, they attract other proteins, which form a sticky, weblike network that could stiffen joints, block arteries and cloud clear tissues like the lens of the eye, leading to cataracts. Since diabetics suffer from all these ailments, the biochemists guessed...
...found the gene behind such misery, but because he knows how it works. The genetic sequence he discovered codes for the enzyme helicase, which is responsible for unzipping the DNA double helix before it replicates. If this unzipping is disrupted, helicase can't tweeze out mutations that randomly occur and instead allows them to pass through to the next cellular generation. Accumulate enough glitches, and diseases of aging develop. "We know that DNA is being damaged at a high rate," he says. "Knowing that a helicase is responsible gets us closer to solving the mystery...
...racked up the awards, it began to occur to me that it might be cool to actually belong to the organization that supplied all those patches. Fortunately, my parents talked me out of it. I'm older and wiser now, and I know that the NRA is effectively a massive special interest group that lobbies to keep access to guns free and easy. I know that one of their officials referred to government agents last year as "jack-booted thugs." I know that they have millions of members and strong influence in Congress. But I still don't understand...
Ultimately, all involved say changes must occur on the undergraduate level in order to achieve a 50/50 gender ratio...
Because CPK burns wood in its ovens, fires like last night's occasionally occur, said Cambridge Police Officer Ron T. Folger...