This challenge game was created in powerpoint. It has 5 categories (Cell Theory, Organelles, Cell Transport, Photosynthesis and Respiration, and Cell Division)with 5 questions each. It is a great review for a cell unit and my students have always loved playing it. I have created questions and answers for all the categories, but it is possible to change them to fit your curriculum.
Important note: Make sure to click on the number value (ie. "200") in order to advance to the correct slide. If you click elsewhere in the box it may not advance to the correct slide.