The biological research is located between the experimentation lab and the bridge. The area contains two (sometimes three) abominations in the first chamber, an alien worker in the second and possibly a few hostile aliens. In the second chamber are three transport matrices, one leading to the Observation Deck, one to the Bridge and one to the Death Ray Hub. You must activate the transporter to the obervation deck to allow the other survivors through. The teleporter to the bridge is shut down and you must go to the death ray hub to continue your mission.
Players gathering alien captive recorded logs should check that they've collected 24 out of 25 of them before proceeding to the Death Ray hub. This will be the player's final opportunity to locate and collect missing recordings. When teleporting into the death ray hub, the teleporter will break.