there aren't many enzymes in food, mainly in fruits, the enzymes in friuts are very similar to ptylin found in the mouth that help break down sugar, they do not need to be ingested before they activate, a proof of this is the apple test, buy an apple, take a bite and leave it without covering it for a few minutes, you'll notice that the bitten part starts turning yellowish brown because the enzymes in the apple are already breaking it down.
In summary, they do not need to be ingested before activation, and the major characteristic of an enzyme is that they do not change after they react with (breakdown) food, so they are in the same form before and after they finish breaking down the food.
Um what do you mean by that ?
The _electroencephalogram (EEG)_ is a device that takes advantage of the changing magnetic fields produced by the electrical activity of the brain to produce a record of neural activity in the awake brain.
I’m pretty sure they are Consumers?