ok i have a question i need a answer to. ok if you use magical scientist's effect in main phase 1 and you special summon fusion monster. then you activate a spell that destroys the magical scientist (ie metamorphosis) does magical scientist effect reset??(meaning the fusion monsters stay on the field even after the turn they were special summoned by magical scientist effect and they can attack your opponent directly) i ask this because if u remove magical scientist from play or flip him down his effect resets so wouldnt it be the same if he is sent to the graveyard. please respond i need and answer to this.

No.
Also if you remove him from play or use BoM on him his effect isn't reset.

But if you use BoM on the Fusion Monster or remove it from play with "Dimension Hole" or IMT then the Fusion monster will be reset.