Final answer:
The animation likely depicted the a) formation of an enzyme-substrate complex, wherein an enzyme's active site binds to a specific substrate, leading to the conversion of the substrate into a product followed by the release of the product, with the enzyme ready for another round of catalysis.
Step-by-step explanation:
In the animation, it was likely shown that the enzyme-substrate complex was formed. This is the process where enzyme molecules possess an active site that bonds to a specific substrate, forming an enzyme-substrate complex as an intermediate step in a reaction. The enzyme converts the substrate into the product by breaking or making bonds between the atoms of the substrate, supported by the induced-fit model where the enzyme's active site undergoes conformational changes upon binding with the substrate.
Enzymes are highly specific in their action; each type of enzyme can usually bind only to one type of substrate, facilitating a specific chemical reaction. This specificity is often described by models like the lock-and-key hypothesis and the induced fit hypothesis. The lock-and-key hypothesis suggests that the enzyme's active site and substrate match each other perfectly in shape while induced fit suggests the enzyme actively conforms to the shape of the substrate upon binding.