The Digestive system

The process starts when saliva from the mouth begin to break down the carbohydrates into simple sugars

Stomach

Liver

Intestine

Once the food reaches the stomach the protease which are made in the stomach and pancreas begin to break down proteins into amino acids.

Once the food reaches the small intestine protease and lipase from the pancreas and bile from the liver which then reacts with the food to create fatty acids and glycerol if they are lipids

The Bile is produces from the liver and is stored in the gall bladder. It is used to increase the surface area of fats to make it so that the lipase can break them down faster

In the small intestine villi absorb small nutrients and absorb them into the bloodstream

This process continues along the large intestines in which small nutrients gets absorbed through the large intestine

Lock and Key Theory

Lock and key theory is a theory to explain how enzymes break down starches or different food. Also the shape of the activation site of the enzyme is exclusive to that substrate

The activation site is where the enzyme fuses to the protein to begin breaking it down

For enzymes to keep working at their best they need to be kept at an optimum temperature and ph otherwise they would denature so the substrate that would normally fit for the chemical reaction to happen would no longer work.

Enzymes

Amylase

Lipase

Protease

Lipase is release from the pancreas and it breakdowns lipids into fatty acids and glycerol

Amylase is release from the Stomach and Pancreas and breakdowns proteins into amino acids

Protease is released form the Salivary Glands and the pancreas and breakdowns carbohydrates into simple sugars

Digestion is where large insoluble molecules are broken down into smaller soluble ones that can then be absorbed through the bloodstream