Enzymes break down food molecules. Starting with amylase in your saliva, then pepsin in your stomach, and peptidase in your small intestine (along with several others), these substances break down food molecules into amino acids and simpler sugars, so that your body can use them as fuel.
lysosomes
well, enzymes are proteins that break up food molecules and digestion is when large protein molecules are broken down
mitochondria
Yes, birds rely on a combination of mechanical digestion in the gizzard, aided by grit or stones, and chemical digestion through gastric acids to break down food effectively. The gizzard's muscular contractions help grind up food, while the acids help further break down the food particles.
Respiration I believe.
Somach acid & saliva
A series of chemicals breaks down food. Lysosomes are cellular organelles that break down waste particles and even food particles.
It is very complex process. Food enters in cell in form of simple molecules (for example Glucose). It uses various enzymes and chemicals to break these molecules in to energy and other by products.
Digestive to digest (main part) food, Endocrine to break it down and release chemicals to break it down(if you consider it a system whichh most don't), Circulatory (to transport the broken down molecules), and Excretory to get ride of wastes.
The process you are referring to is called digestion and it occurs in living organisms to break down food into smaller molecules that can be absorbed and used for energy. In cells, a process known as autophagy uses chemicals to break down and recycle worn out cell parts, helping maintain cellular function and health.
You are saliva. Saliva contains digestive enzymes that help break down food into smaller molecules that can be easily absorbed by the body.
The cells themselves don't break down the food, it is a series of chemicals and enzymes (biological catalysts) in the digestive system. All food is broken down in the digestive system by a process called, funnily enough, digestion. Then it is absorbed into the blood stream through the villus in the small intestines
They break down food molecules which make it easier for the body to digest the food.
Pancreas
lysosomes
To break down the food molecules.
Lysosomes are the organelles that release chemicals to break large food particles into small ones.