B2.1.5 - Bacteria and Enzymes in Digestion Flashcards
Where in the digestive system are bacteria found?
Large intestine
Why are the bacteria in your digestive system important?
They make important vitamins such as vitamin K
Food that contain ‘good bacteria’ are called…
probiotics
Digestive juices contain special protein molecules called…
enzymes
What is the definition of a digestive enzyme?
A biological catalyst that speeds up digestion without being used up.
Enzymes always end in which letters?
‘-ase’
How do enzymes speed up digestion?
They break down large molecules into small molecules.
Which enzyme breaks down carbohydrates?
Carbohydrase
Which enzyme breaks down protein?
Protease
Which enzyme breaks down lipids?
Lipase
Carbohydrates are broken down by carbohydrase into…
sugars
Proteins are broken down by protease into…
amino acids
Lipids are broken down by lipase into…
glycerol + fatty acids
Which type of nutrient is starch and which enzyme will break it down?
Starch is a carbohydrate so carbohydrase.
Starch is found in…
bread
Where in the digestive system are carbohydrates broken down by carbohydrase?
Mouth
Small intestine
Where in the digestive system are proteins broken down by protease?
Stomach
Small intestine
Where in the digestive system are lipids broken down by lipase?
Small intestine
What else helps lipase to digest lipids?
Bile
Where is bile produced?
In the liver
How does bile help lipase to digest lipids?
It break lipids into small droplets that are easier for lipase enzymes to work on.
