It's wrong, the molecules are many orders of magnitude smaller than is possible to see. The main black widow venom is alpha-Latrotoxin (http://en.wikipedia.org

It's wrong, the molecules are many orders of magnitude smaller than is possible to see. The main black widow venom is alpha-Latrotoxin (http://en.wikipedia.org/wiki/Latrotoxin http://en.wikipedia.org/wiki/Latrotoxin), which is a 130 kDa protein according to wikipedia. That's large for a protein but there are bigger. Eukaryotic ribosomes are around 2500 kDa, but even they are completely invisible at 20 nm wide, and there are a thousands-millions of them per cell.