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Digestion & Biochem Part 2
Test Description: Digestive organs & more basic biochem
Instructions: Answer all questions to get your test result.
1) What is the role of bile in fat digestion?
A
Bile is an enzyme
B
Mechanically breaks down fats for lipase to chemically digest
C
Bile is a buffer
D
Chemically breaks down fats for lipase to mechanically digest
2) What are the fingerlike projections in the small intestine?
A
Chyme
B
Colon
C
Villi
D
Peristalsis
3) What is the function of the villi in the small intestine?
A
Increase surface are for water absorption
B
Act as a buffer in increase enzyme function
C
Lower the activation energy for bile
D
Increase surface area for nutrient absorption
4) What is the name for the relatively constant internal environmental conditions of the body?
A
Homeostasis
B
Ingestion
C
Protein synthesis
D
Peristalsis
5) Enzymes & other proteins can be denatured by:
A
All answers are correct
B
a change in pH
C
an increase in temperature
D
a decrease in temperature
6) Where does heartburn occur?
A
Where the esophagus joins the small intestine
B
Where the stomach joins the esophagus
C
Where the small intestine joins the large intestine
D
Where the liver joins the gall bladder
7) What is the function of stomach acid?
A
Breakdown large, complex carbohydrates before entering the gall bladder
B
Increase surface area of material before entering the epiglottis
C
Neutralize basic foods in your diet
D
Create an acidic environment so peptidase can breakdown proteins
8) The low pH of orange juice indicates it is:
A
delicious
B
a base
C
neutral
D
an acid
9) How would your diet be altered if your pancreas was not functioning properly?
A
Carbohydrate digestion would be faster
B
Protein digestion would be faster
C
Fat digestion would be faster
D
Fat digestion would be slower
10) Why is digesting a gallon (3.8 liters) of milk in 1 hour such a biological challenge?
A
The pancreas cannot produce enough lipase to chemically break down the milk fat.
B
The body cannot produce enough bile to mechanically break down the milk fat
C
The stomach only expands to about 2 liters
D
All answers are correct
*select an answer for all questions
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