There's a bit of a trick in your question! While protons, neutrons, and electrons are fundamental particles in the world of physics, there is no known particle starting with the letter "q" that makes them up.

Here's why:

* Protons and neutrons are made up of even smaller particles called quarks. These quarks are fundamental, meaning they are not made up of anything else.

* Electrons are also considered fundamental particles, meaning they are not made up of anything smaller.

So, while we understand how protons and neutrons are built from quarks, there are no "q" particles involved in their composition.