Pretty damn awesome game. Bugs suck though.
The toxin bug, earlier, and a movement bug, where the membrane wouldn't respond to any touching.
I did hugely enjoy the game though, and it was well worth it to get past the bugs.
With the learning content, you should definitely add some more information on peroxisomes and lysosomes in game. Maybe make the number of peroxisomes flash red if you have more organelles than peroxisomes, or make your lysosome number flash red if viruses that can be eaten by lysosomes attack, and the number is slightly low.
The problem is, with a lot of organelles, you forget what they do. If they need anything, you give them a load of resources, but they're good enough that they can survive on just a few. In game there are no consequences most of the time if you don't think about what they do.
I completely forgot about the centrosome, so you should give that a ability. Maybe, organelle push? So, you enable it, and all the organelles move a bit away from the nucleus, away from each other, at the cost of some ATP and amino acids. It was never that fun moving them slowly away.