Digestion, Energy and Metabolism Practice Questions
Digestion, Energy and Metabolism Practice Questions
True or False:
1. Digestion begins after you swallow food.
2. Digestion includes both mechanical and chemical actions.
3. Vitamins and minerals are not digested.
4. Hydrochloric acid is used in digestion.
5. Saliva breaks down fats.
6. Proteins are the first nutrient to be digested.
7. Nutrients can pass directly from the small intestine to the rest of the body.
8. Most digestion occurs in the large intestine.
9. The digestive tract in also known as the alimentary canal.
10. Saliva is a gastric fluid.
11. Most people would probably feel comfortable with 3 liters of food in their stomach.
12. The digestive process can take 12-48h
13. Calorie needs are determined by basal metabolic rate and voluntary activities
14. Plants are the original source of all energy.
15. A rapid heartbeat and respiration rate indicate that a creature has a high overall metabolism.
16. Age has no affect on metabolic rate.
17. Catabolism releases energy.
18. Carbohydrates spend 3-5 hours in the stomach.
19. Proteins spend 1-2 hours in the stomach.
20. Fats spend up to 7 hours in the stomach
Write the word(s) that best answers the question
21. What is the name of the muscular contractions that break down food? _____________________
21. When food leaves the stomach, what is it called? ____________________________
21. In what section of the digestive tract is waste material collected? _____________________________
21. What structure keeps food from rising out of the stomach? _____________________________
21. What process gradually breaks down foods to free nutrients for the body to use? ____________________
21. What fluid is secreted in the mouth to help break down food? __________________________
21. What is the name for the mechanical process of chewing food? ___________________________
21. What organ is responsible for creating bile? ___________________________
21. What forms a barrier for the windpipe (trachea) when you swallow? _______________________
21. What component of gastric fluid protects the stomach lining from other components? _________________
21. What structure keeps food from rushing from the stomach into the small intestine? ____________________
21. Where is bile stored? ____________________
21. The process of metabolism that breaks down complex molecules into simpler ones_____________________
21. What does B.M.R stand for?_______________________________________________________
21. The process of metabolism that combines molecules during chemical processes in order to build the materials of living tissue_____________________________
21. When the body sweats to lower its internal temperature and prevent overheating it is an example of the body maintaining _________________________________
21. Excess energy taken in, that the body does not use, gets stored as _________________________
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Answer the following:
38. List 4 things a healthy metabolism does for your body.
38. In what order are nutrients digested and absorbed?
38. Calculate your BMR
38. Label the following diagram
• Small intestine
• Liver
• Stomach
• Gall bladder
• Pancreas
• Mouth
• Large intestine
• Esophagus
• Draw and label the cardiac sphincter and pyloric sphincter
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