Indeed, That door obviously was the engineering door. The Engineering set on Star Trek Nemesis was also re-used, As the lab and the stellar cartography lab.
Your joking right, the engineering section of Nemesis was enormous.
Not at all, Thats what i says in the DVD extras, they just put up tempory walls and displays to cover the fact it was engineering.
Yeh, that actually makes sense, but they would of had to build a whole room inside Engineering to make it look completely different.