You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: DUMB GUYS' GREATEST INVENTIONS 
Clue: Dumb guys think it's cool they get to slide their own credit card at the store; even cooler? This word for "slide"
swipe

Category: "PH" DELIGHTS 
Clue: Appropriately, Paul Nurse shared the 2001 Nobel Prize in this category
physiology

Category: 1997 ANNIVERSARIES 
Clue: 1997 marks the 75th anniversary of Sir Frederick Banting & Charles Best's discovery of this pancreatic hormone

insulin