Questions: Which of the following is the degradation of complex compounds during cellular metabolism?

The answer is the first one: catabolism.

Explanation:

• Catabolism: This is the process of breaking down complex molecules into simpler ones, releasing energy in the process. It is a key part of cellular metabolism where large molecules such as carbohydrates, fats, and proteins are degraded to produce energy.
• Anabolism: This is the process of building up complex molecules from simpler ones, which requires energy. It is the opposite of catabolism and involves the synthesis of cellular components like proteins and nucleic acids.

In summary, catabolism is the degradation of complex compounds during cellular metabolism.