Chapter 4- Digestion And Enzymes Flashcards
Name the four types of teeth
Incisors
Canines
Pre-molars
Molars
What is a substrate?
What an enzyme reacts on eg. Starch
Product
What is produced because of the enzymes reaction eg. Amylase’ product=maltose
What is an enzyme
(Like catalyst)
- A protein that speeds up a reaction w/o being used up in the reaction
- each enzyme has ONE function eg. Amylase acts on starch
Where does digestion begin?
The mouth
What are the two types of digestion?
- chemical
- physical
What is the next part of the digestive system after the mouth? What are it’s functions?
Oesophagus:
- muscular tube
- pushes food down (thanks to fibre)
What is the stomach’s function to digestion?
Stomach:
- muscular bag that holds food for a few hours
- Hydrochloric acid (HCL) softens food and kills bacteria
- enzymes also (chemically)digest food
- stomach churns food (physical)
What does HCL acid to in the stomach to aid digestion?
- softens food
- kills basteria
How does the mouth chemically and physically digest food?
Phys- Teeth chew food
Chem- Amylase acts on starch in saliva
How does the stomach physically and chemically digest food?
Phys- Churns food
Chem- Enzymes act on food
-HCL softens food and kill bacteria
How does the small intestine aid digestion?
- produces enzymes
- lower half passes digested food into blood stream
How does the liver aid digestion?
- creates the enzyme bile
- bike digests fat in the small intestine
Name two enzymes and what they act on
Amylase->starch
Bile -> fat
How does the panaceas aid digestion?
Creates enzymes to digest food in the small intestine
