Yes
breaks down organic matter
It breaks down food particals
Bacteria that's what
Bacteria.
fungi and bacteria
bacteria (apex)
I believe the answer you are looking for is lysosomes. Lysosomes are common in animal cells, but not so much in plants, and they contain hydrolytic enzymes that aid in intracellular digestion. Basically, when white blood cells eat bacteria, lysomes are released onto the bacteria, which kills them (and breaks them down.) The process is called necrotic cell death.
Depending on what the bacteria has on their cellular wall, you aren't going to destroy it with your enzyme. Most bacteria are probably killed by other bacteria living in the mouth ecosystem.
One job of the skin is to keep viruses and bacteria from entering the body. When the skin is compromised it has a more difficult time doing that. Another function of the skin is to keep the rest of you inside. Again when the skin is compromised it can not do that as well and you bleed.
nuclear explosions or bacteria
lactase
It breaks down biological waste and turns it inot methane gas with the help of bacteria.