In the context of metabolism and homeostasis, what does the term homeostasis mean?

• A. The conversion of light energy into chemical energy during photosynthesis
• B. The breakdown of complex molecules into simpler molecules to release energy
• C. The process by which organisms increase body size by producing new cells
• D. Maintenance of a relatively stable internal environment despite changes in external conditions

Answer: (D)

Verified step by step guidance

1. Understand that homeostasis refers to the ability of an organism to maintain a stable internal environment despite changes in external conditions.
2. Recognize that this involves regulating factors such as temperature, pH, water balance, and ion concentrations within narrow limits.
3. Differentiate homeostasis from other metabolic processes like photosynthesis (conversion of light energy), catabolism (breakdown of molecules), and growth (increase in body size).
4. Note that homeostasis is crucial for proper cellular function and overall organism survival.
5. Summarize that homeostasis is the maintenance of internal stability, which is essential for life, rather than a process of energy conversion or growth.