I did memorize all the digestive enzymes, how they interact with the body (what they do). I do remember learning how they cleave the peptide (in UD classes), but I highly doubt you need to know that for the mcat.
The pancreas produces aminopeptidases as well. I don't think this is important for the MCAT though. Just know that the majority of digestive enzymes are made by the pancreas and secreted (as zymogens) into the small intestine where they are activated by trypsin (which is activated by enteropeptidase).
Too much details for the MCAT. However, understand that cleavage specificity is due to the specific "pockets" and "oxy-anion holes" and such things on the actual protein.