Answer:
Proteins are broken down by the enzymes pepsin and peptidase, and by hydrochloric acid. Lipids are broken down by lipases.
D. Ribosome
Proteins are manufactured on ribosomes, which are found in the rough ER. The rough ER is called this for the rough appearance the ribosomes give it.
Answer:
Some parts of the cell theory would change because maybe the original one said something completely different. so some parts of the cell theory would change like: all cells comes from preexisting cells.And It would changed to something like: All cells form all by them selves.
Explanation:
That waste product would be carbon dioxide.