Which phrase best defines the term homeostasis in the context of metabolism and physiology?

• A. The conversion of genetic information into functional proteins through transcription and translation
• B. The process by which cells increase in size and number through mitosis and differentiation
• C. The maintenance of a relatively stable internal environment despite changes in external conditions
• D. The breakdown of complex molecules into simpler molecules to release energy

Answer: (C)

Verified step by step guidance

1. Understand that homeostasis refers to the ability of an organism or cell to maintain internal stability.
2. Recognize that metabolism involves all chemical reactions in the body, including those that generate energy and those that build molecules.
3. Consider that physiology studies how the body functions, including mechanisms that regulate internal conditions like temperature, pH, and ion concentrations.
4. Identify that homeostasis is about maintaining a relatively stable internal environment despite external changes, which is crucial for proper metabolic and physiological function.
5. Compare the given options and select the one that best describes this concept: 'The maintenance of a relatively stable internal environment despite changes in external conditions.'