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of the following is true about homeostasis?

  1. t is the state of internal constancy of a cell

  2. t is the process of maintaining stable equilibrium in a cell

  3. t is the regulation of body temperature and the pH of a cell

  4. t is the exchange of oxygen and carbon dioxide between cells

The correct answer is: t is the process of maintaining stable equilibrium in a cell

Homeostasis is the process by which organisms maintain a stable internal environment. Option A is incorrect because homeostasis applies to whole organisms, not just cells. Option C is incorrect because homeostasis involves more than just the regulation of body temperature and pH. It also encompasses the regulation of other factors such as blood sugar levels and water balance. Option D is incorrect because the exchange of oxygen and carbon dioxide between cells is part of cellular respiration, not homeostasis. So, option B is the most accurate answer as it accurately describes homeostasis as a process of maintaining stable equilibrium in a cell.