Trivia: Sigourney Weaver actually makes the basketball shot. Even though the ball is out of shot for a second, she made the shot with no assistance. The shot cuts quickly because Ron Perlman dropped character in celebration, which can be seen in deleted scenes online.

Alien Resurrection (1997)
1 video
Directed by: Jean-Pierre Jeunet
Starring: Sigourney Weaver, Winona Ryder, Ron Perlman, Dan Hedaya, Gary Dourdan
Other mistake: In the scene where Ripley throws the basketball at Johner, Christie says to Ripley, "Ok, I've got a new game, tag .." He hits her with the handles straight in the face once, he misses the next shot, misses again, and Ripley hits him to the ground, but you neither see or hear the handles fall. (00:23:15)
Trivia: In the scene where Ripley discovers the room full of failed clones, she stumbles upon Ripley 7, a hideous, malformed but still living clone. The entire scene after she discovers her ill-fated 'sister' is ripped directly from, and is an homage to, one of the most famous deleted scenes from the original Alien. Ripley finds a long dead Brett and barely living Dallas cocooned in the bowels of the Nostromo, and Dallas asks her in a pathetic, painful voice to kill him. She obliges by using her flamethrower. The scene in Resurrection is almost 100% identical, everything from the design of the flamethrower to the emotional reaction and facial expressions she had in the cut Alien scene.
Question: Curious on why the surgical equipment doesn't melt when removing the Queen chest burster from Ripley when she has acidic blood?
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Answer: This is just speculation (and I haven't watched the movie for ages) but the operation is done with medical equipment in a facility designed for studying Aliens, which the military knows a little about. Maybe it is made of futuristic acid proof material.
If the surgical tools were acid proof, surely the floors of the cells that contain the grown alien specimens would also be acid proof; but that is how they escape, by sacrificing one of their own in order to spill acid blood onto the floor.
Well, you can imagine any acid-proof metal is probably very expensive. They can't make the entire station out of that stuff. Surgical equipment is probably necessary for their research, so they make an exception.
lionhead