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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?

AMechanically breaks down fats for lipase to chemically digest BBile is an enzyme CBile is a buffer DChemically breaks down fats for lipase to mechanically digest

2) What are the fingerlike projections in the small intestine?

APeristalsis BVilli CColon DChyme

3) What is the function of the villi in the small intestine?

ALower the activation energy for bile BAct as a buffer in increase enzyme function CIncrease surface area for nutrient absorption DIncrease surface are for water absorption

4) What is the name for the relatively constant internal environmental conditions of the body?

AHomeostasis BProtein synthesis CPeristalsis DIngestion

5) Enzymes & other proteins can be denatured by:

Aan increase in temperature Ba change in pH CAll answers are correct Da decrease in temperature

6) Where does heartburn occur?

AWhere the liver joins the gall bladder BWhere the small intestine joins the large intestine CWhere the stomach joins the esophagus DWhere the esophagus joins the small intestine

7) What is the function of stomach acid?

AIncrease surface area of material before entering the epiglottis BBreakdown large, complex carbohydrates before entering the gall bladder CNeutralize basic foods in your diet DCreate an acidic environment so peptidase can breakdown proteins

8) The low pH of orange juice indicates it is:

Adelicious Ban acid Ca base Dneutral

9) How would your diet be altered if your pancreas was not functioning properly?

AFat digestion would be faster BCarbohydrate digestion would be faster CFat digestion would be slower DProtein digestion would be faster

10) Why is digesting a gallon (3.8 liters) of milk in 1 hour such a biological challenge?

AAll answers are correct BThe body cannot produce enough bile to mechanically break down the milk fat CThe stomach only expands to about 2 liters DThe pancreas cannot produce enough lipase to chemically break down the milk fat.

*select an answer for all questions

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