Human Digestive System, Enzymes, Food Tests😃 Flashcards
Examples of large molecules found in the digestive system:
-starch
-proteins
-fats
Examples of smaller digestive molecules:
-sugars
-amino acids
-glycerol
-fatty acids
What can happen to these smaller digestive molecules?
They can be absorbed into the bloodstram
What are the three types of digestive enzymes
-carbohydrases
-proteases
-lipases
What does carbohydrase do
Convert carbohydrates to simple sugars
What is an example of a carbohyrase
Amylase (converting starch to maltose)
Where is amylase found
-the salivary gland
-the small intestine
-the pancreas
What do proteases do?
Convert proteins to amino acids
Where are proteases found?
-the stomach
-pancreas
-small intestine
What do lipases do?
Convert lipids to glycerol and fatty acids
Where are lipases found?
-pancreas
-small intestine
What does bile do
Neutralise stomach acids and emulsify fats
Where is bile produced
Liver
Where is bile stored
Gall bladder
Is bile alkaline/acidic
Alkaline
What happens when the fat is emulsified
-broken down
-bigger surface area for lipase to work on
-digestion is quicker
What do digestive enzymes do
Act as catalysts for the breakdown of different food molecules
What enzyme is found in the tongue
-salivary glands
-produce amalyse
What is produced in the liver
-bile
-neutralises acid
-emulsifies fat
What enzyme is found in the stomach
-protease
-hydrochloric acid also produced to kill bacteria and get the right PH for protease to work
where is bile stored
gall bladder
what enzyme is produced in the pancreas
protease, lipase and amylase, into the small intestine
What happens in the large intestine
Excess water is absorbed
What enzyme is produced in the small intestine
Protese, amylase and lipase to complete digestion
