Base current is controlled by the value of the base bias resistor. Current through the base emitter junction will cause a collector current equal to base current times beta. Both of those currents will flow through the emitter.
It makes no difference whether the device is NPN or PNP.
Yes, I agree 1000% with that!
This isn't splitting hairs... if you were taking a test, do you think the Professor would let you slide if you were to answer a question by saying... turning transistors on and off it isn't done with electrons, its done with current...
? Do you think that would be an acceptable answer for full credit? For individuals who know, it's no big deal, they understand and make the connection, but for those that are just learning it's a very big deal.