Cataracts Facts. 1  Cataracts are changes in clarity of the natural lens inside the eye that gradually degrade visual quality. The natural lens sits behind the colored part of the eye (iris) in the area of the pupil, and cannot be directly seen with the naked eye unless it becomes extremely cloudy.
Hershey and Chase. Alfred Hershey and Martha Chase did an Experiment in 1952 that was called the Hershey-Chase Experiment. This experiment set out to determine what composed the genetic material of a bacteriophage. A bacteriophage is a virus that infects a bacterium.
The Chaserâs ranks include golem-esque math teacher Mark Labbett, laconic barrister Shawn Wallace, prim and ruthless faux-governess Anne Hegerty, and chipmunk-cheeked wit Paul Sinha. The concept of The Chase is simple. Four regular folks try to beat a quiz-circuit ringer in a trivia contest. Davids versus Goliath.hat dilation of time might be The Chase âs greatest trick. Two minutes is a long time by game-show standards, but then again, itâs consistently amazing how much The Chase can accomplish in those 120 seconds.