Question

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.
1. Oxidation reaction
2. Muscle tissue breakdown -> release of amino acids
3. Adipose tissue formed from fatty acids
4. A-OH + H-B -> AB + HOH
5. AB + HOH -> A-OH + H-B
6. Beta oxidation of fatty acids
7. Gluconeogenesis
8. NADH+H2 -> NAD+

Answer 1

1. Catabolic

2. Catabolic

3. Anabolic

4. Anabolic

5. Catabolic

6. Catabolic

7. Anabolic

8. Anabolic

Explanation: Catabolic reactions are exothermic meaning they release alot of energy and electrons, whereas anabolic reactions are endothermic using up alot of energy for production and storage. Breaking down glucose to produce ATP is an example of a catabolic reaction. Using fatty acids and lipids to make adipose tissues is an example of an anabolic reaction, breaking down adipocytes for production of heat and ketone bodies is catabolic.