Vacuole
Vacuoles are in both plant and animal cells but they are more visible in plants because they are much bigger. Some vacuoles can be very big some occupy 90% of the plants cell. They store enzymes, metabolic wastes, and any nutrients the cell might need to survive.
Sources: http://www.seorf.ohiou.edu/~tstork/compass.rose/cell.pages/CB.vacuole.GIF
http://upload.wikimedia.org/wikipedia/en/thumb/8/8e/Plant_cell_structure_svg_vacuole.svg/300px-Plant_cell_structure_svg_vacuole.svg.png
http://middletownhighschool.wikispaces.com/file/view/vacuole.jpg/98890673/vacuole.jpg
http://upload.wikimedia.org/wikipedia/en/thumb/8/8e/Plant_cell_structure_svg_vacuole.svg/300px-Plant_cell_structure_svg_vacuole.svg.png
http://middletownhighschool.wikispaces.com/file/view/vacuole.jpg/98890673/vacuole.jpg