Organisation Flashcards
What does the mouth do?
Chemically and physically digest the food
What does the salivary gland do?
It produces amylase to break down the food
What does the liver do?
It makes bile
What does the gall bladder do?
Store the bile
What does the stomach do?
It breaks down food with acid and enzymes
What does the pancreas do?
Releases and produces enzymes
What does the small intestine do?
The nutrients are absorbed into the blood
What does the large intestine do?
It absorbs the waste water
What does the rectum do?
Faeces is stored here
What does the anus do?
Releases the faeces when you need the toilet
What enzymes does the pancreas produce?
Protease, amylase and lipase
What does bile do?
Breaks down large globules of fat into smaller ones
What does bile do to the pH?
Bile is alkaline so it increases the pH making it right conditions for the enzymes to work
How to test for glucose?
Equal vol of benedict’s solution to the food
Heat for 5mins
If it turns red glucose is present
How to test for starch?
Add a few drops of iodine to the food sample
Shake if it turns a blue/black starch is present
How to test for proteins?
Add equal vol of biuret solution
Shake and if it turns to purple protein is present
Where can enzymes been found?
Stomach
Saliva
Small intestine
What is the dent called in an enzyme?
Active site
What is the molecule called that fits into the active site?
Substrate
What does the enzyme make the substrate do?
React creating products
What two main factors affect enzyme action?
Temperature
pH
What happens when the temperature increases too much?
The enzymes active site denatures so the substrate can’t fit into the enzyme
What happens when you increase the temperature?
The rate of the reaction increase because their is lots of kinetic energy so the enzymes and substrates collide more
What is a tissue?
A group of cells that have a similar structure and function
What is an organ?
A group of tissues that have a specific function