Topic 2 Enzymes And Digestion % Flashcards
(21 cards)
Where are the enzymes used in digestion made
Produced by cells and then released into the gut to mix with food
Why do big molecules need to be broken down in the digestive system
Need to be broken down to pass through the walls of the digestive system
What are big molecules broken down by in the digestive system
Digestive enzymes
Examples of big molecules in the digestive system
Starch, proteins and fats
What are the big molecules broken down into
Sugars
Amino acids
Glycerol
Fatty acids
Where do the broken down soluble molecules go in the digestive system
Through the walls allowing them to be absorbed into the blood stream
What do amylase convert
Carbohydrates into simple sugars
What is starch broken down by
Amylase
What is starch made into
Glucose
What converts proteins
Protease
What are proteins broken down to
Amino acids
What converts lipids
Lipases
What do lipids covert into
Glycerol and fatty acid
Where are amylase found
Salivary gland
Pancreas
Small intestine
Where is protease found
Stomach (it is called Pepsin)
Pancreas
Small intestine
Where are lipases found
Pancreas
Small intestine
What can the products of digestion be used for
Used to make new carbohydrates, proteins and lipids.
Some of the glucose made is used in respiration
What does bile do
Neutralises the stomach acid
Emulsifies fats
Where is bile produced
Liver and is stored in the gall bladder before it is released into the small intestine
How does bile neutralise stomach acid
Hydrochloric acid makes the pH too acidic .
Bile is alkaline and neutralises the acid to make conditions alkaline and the enzymes in the small intestine work best in alkaline conditions
What does emulsifies fats mean
Breaks fat into tiny droplets and gives them a much bigger surface area for lipase to work on
Which makes digestion faster
