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.
Cornelius Crane  Chevy  Chase (/ËtÊÉvi/ ; born October 8, 1943) is an American comedian, actor, and writer. Born into a prominent New York family, Chase worked a plethora of odd jobs before he moved into comedy and began acting with National Lampoon.e has hosted the Academy Awards twice (1987 and 1988) and briefly had his own late-night talk show, The Chevy Chase Show. In 2009, he became a regular cast member (Pierce Hawthorne) on the NBC comedy series Community. Chase left the show in 2012, having already filmed most of the episodes in season 4.