Biology Sites
Spore2D Creature Creator - create creatures with certain biological attributes, then test their viability: http://www.spore2d.com/
Freezeray - interactive visual aids for secondary science classes: http://freezeray.com/
Organelles Research

Virtual Cell Tour: http://www.ibiblio.org/virtualcell/

Cells and Organelles: http://biology.clc.uc.edu/courses/bio104/cells.htm

Organelle Review: http://people.usd.edu/~bgoodman/ReviewFrames.htm

Identifying Eukaryotic Animal Cell Organelles (interactive): http://www.wisc-online.com/Objects/ViewObject.aspx?ID=ap11604

Cells Alive Interactive Animation: http://www.cellsalive.com/cells/cell_model.htm

Thinkquest: http://library.thinkquest.org/12413/structures.html

Cell Organelle Table: http://www.schools.utah.gov/curr/science/sciber00/7th/cells/sciber/orgtable.htm