Name: ____________________________
Science 7 - ____ Johnston Date: _________________________
Chapter 11: The Digestive System - Test Review
Section 1: Food and Energy
1. The 6 nutrients needed by the body are ______________, ___________, ______________,
_________________, _________________, and ______________________.
2. The amount of energy required to raise the temperature of one gram of water by one Celsius
degree is called a _______________________.
3. The human body normally needs _________________ Liters of water in a day.
4. According to the Food Guide Pyramid, the __________, _____________, and ____________
group should be eaten in very limited amounts.
5. On a food label, 2,000 Calories per day are used as the standard to determine the
_________________ _______________ _____________.
6. The energy your body needs comes from ______________________.
7. ____________________ is a carbohydrate that helps your digestive system function even
though your body cannot digest it.
8. ____________________ are made up of amino acids.
9. About _________________ % of a human’s body weight is made up of water.
10. According to the Food Guide Pyramid, the ____________________ group should make up the
largest part of a person’s diet.
11. Potatoes and rice are sources of complex ________________________, which are made of
sugar molecules linked in a chain.
12. Proteins from animal sources are called __________________ proteins because they contain
all the essential amino acids.
13. The number of ______________________ that you need during the day depends on your
size, age, and level of activity.
14. Nutrients that are needed for tissue growth and repair are known as
___________________________.
Section 2: The Digestive Process Begins
15. Eliminating undigested wastes from the body, breaking down food, and absorbing food
molecules into the blood are all functions of the ________________________ system.
16. The process in which your body breaks down food into small nutrient molecules is called
_________________________.
17. The function of the _______________________ is to carry food from the mouth to the
stomach.
18. ___________________ ________________ must be present in the stomach for pepsin to
work best.
19. _____________________ enable the small intestine to absorb large amounts of nutrients.
20. ______________________ in the mouth contains an enzyme that begins chemical digestion.
21. _______________________ is the process that involves muscle contractions that move food
through the esophagus.
22. ____________________ is the substance that coats and protects the inside of the stomach.
23. Most chemical digestion takes place in the _______________ ____________________.
24. The ______________________ is the organ that produces bile.
25. The _____________________ stores bile and releases it through a tube into the small
intestine.
26. The digestive organ that releases enzymes that help break down starches, proteins, and fats in
the small intestine is the _____________________.
27. Enzymes are proteins that help in the kind of digestion called ________________________
digestion.
28. Food does NOT travel through the ___________________ and ___________________.
29. Food is absorbed in the _______________ ______________________ and this is also where
almost all chemical digestion takes place.
*Be familiar with the pictures of the digestive system that were put into the journal.
Section 3: Final Digestion and Absorption
30. In the ____________________ ______________________, water is absorbed from
undigested food.
31. One of the roles of the __________________ intestine is to prepare waste material for
elimination.