SBI3U – Animals: Structure and Function Unit
Name: _____________________________
Digestive System Practice Quiz #1 - ANSWERS
1. Name the building blocks and one function for each of the following food molecules.
Function
Proteins
Carboyhydrates
Lipids (fats)
Transport materials through membrane
Structural component of cells
Enzymes and chemical messaging (hormones)
Short-term energy / Long-term energy
Structural support
Long-term energy / Insulation
Cushioning of internal organs / Chemical messaging
3.
Match
structurewith
with the
letter
form from
the diagram
2. Match
the the
structure
thecorrect
correct
letter
the diagram.
______
H Anus
C Esophagus
______
K
______ Gall bladder
F Large intestine
______
J
______ Liver
A Oral cavity
______
L
______ Pancreas
B Pharynx
______
G Rectum
______
I
______
Salivary glands
E
______ Small intestine
D Stomach
______
D
3. What is the function for the following LETTERED structures?
J
E
F
Produces bile
Regulates metabolism / detoxifies blood
Digests and absorbs nutrients
Absorbs water and some minerals
Digestive System Activity #1 page 6
Building Blocks
Amino acids
Monosaccharides (glucose)
3 fatty acids and glycerol
4. What role do the following play in the digestive system?
CCK
Stimulates contraction of gall bladder to release bile into the duodenum
Cholecystokinin
pepsin
Active form of an enzyme that breaks down proteins into short chain of aa
In saliva and stomach; breaks down starch and other complex carbohydrates
Amylase
Softens food, kills bacteria and activates pepsinogen into pepsin
HCl
secretin
A hormone that stimulates liver to make more bile
Also stimulates the pancreas to produce HCO3-- rich pancreatic fluids in order to
neutralize HCl from the stomach
5. What three parts (in order) make-up the small intestine?
duodenum, jejunum and ileum