Please do not stop making animations we are helped alot by your videos. These animations clear our concepts like crystal. It's a humble request to post more.
Very good explanation, but why does a substrate attach to an enzyme (catalyst)? Only a very specific substrate can attach to the 'active site' of an enzyme - is this because of electrical charge or something? Are they held together by opposite charges, or do they react chemically? And how does this fusion between catalyst and substrate lower the activation energy needed to break the bonds in the substrate? (Either way, the electrons in certain atoms that make up the substrate get 'less attached' to their protons, either because covalent/ionic bonds are formed with atoms of the catalyst, thus changing electrical properties, or because they just experience a 'pull' from some atoms of the catalyst, thus making the internal bonds in the substrate weaker to the point where they separate). I don't really know what I'm talking about, so I would certainly appreciate if someone could help me out here :)