Chapter 7 Homework

Worksheet 7-A: Metabolism Exercises

Name __ _________________________

Metabolism explains how the cells in the body use nutrients to meet its needs. Cells may start with small, simple compounds and use them as building blocks to form larger, more complex structures (anabolism). These anabolic reactions involve doing work and so require energy. Alternatively, cells may break down large compounds into smaller ones (catabolism). Catabolic reactions usually release energy. Determine whether the following reactions are anabolic or catabolic. Indicate whether each of the following reactions is anabolic or catabolic.

Reaction Type of Reaction

1. Glucose + glucose → glycogen Anabolic Catabolic

2. AB → A + B Anabolic Catabolic

3. Glycerol + fatty acids → lipids  Anabolic Catabolic

4. Glycolysis Anabolic Catabolic

5. Glucose molecules linked to form glycogen  Anabolic Catabolic

6. Electron transport chain Anabolic Catabolic

7. Oxidation reaction Anabolic Catabolic

8. Muscle tissue breakdown → release of amino acids Catabolic Catabolic

9. Adipose tissue formed from fatty acids  Anabolic Catabolic

10. Gluconeogenesis  Anabolic Catabolic

Anabolic Catabolic
1. A cracker becomes glucose.  
2. You consume more energy than your body expends.  
3. Fasting.  
4. A piece of ham becomes amino acids.  