The document describes PowerPoint diagrams for scientific presentations that are easy to use, scalable, transparent, re-colorable, and re-constructible. The diagrams can be copied and pasted into PowerPoint slides without installation, resized without loss of quality, fit any background color, have colors and lines customized, and be assembled or taken apart to create new illustrations while maintaining transparency between diagrams. A sample slide demonstrates how the diagrams can be used to illustrate biological pathways. Thousands of professionally designed PowerPoint diagrams are available to help users create impactful presentations efficiently.