Whi is the relationship between an enzyme and it substrates compared to a lock key?

They say how an enzyme perfectly fits into its substrate is alike a "lock and key".

Only one specific enzyme can fit a specific substrate.

feral cats are estimated to eat tens of millions of native animals each night in australia

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.