Digedtion And Enzymes Flashcards
How long is the digestive system
7-9m
What does the digestive system do
Breaks down food eaten into nutrients small and soluble so they can be absorbed into the bloodstream
What is ingestion
Food is taken in through the mouth
What is digestion
The food is broken down into small and soluble substances
What is absorption
The small soluble products are absorbed from the villi into the bloodstream and transported around the body
What is assimilation
The soluble products are taken into the cells where they are used
What is egestion
Removal of faeces
What is mechanical digestion
Food is broken up by the teeth and churned in the stomach
What is chemical digestion
Food is broken down by enzymes.
What is an enzyme
A biological catalyst
What does a biological catalyst mean
This means that they are biological molecules
What are enzymes made of
Protein
What do enzymes do
Speed up chemical reaction
How many enzymes are in the digestive system
3
What does amylase break down
Starch
What does protease break down
Protein
What does lipase break down
Fat
What does amylase turn starch into
Glucose
What does protease turn protein into
Amino acids
What does lipase turn fat into
Fatty acids and glycerol
What are enzymes sensitive to
Temperature and PH
If there is to big a change in temperature or PH the enzyme will
Denature
