Which of the Following Statements Most Correctly Defines Homeostasis

Question

Which of the following statements most correctly defines homeostasis?
A) All living organisms are alike.
B) Living organisms do not change much over time.
C) Human beings and other animals acquire materials and energy when they eat food.
D) It takes energy to maintain the organization of the cell.
E) Cells and organisms maintain a fairly constant internal environment.

Accepted Answer

Homeostasis refers to the ability of cells and organisms to maintain a fairly constant internal environment. This includes maintaining a steady state of variables such as pH, temperature, and nutrient levels, which is necessary for proper cell function and survival. Choice A is incorrect because while living organisms share certain characteristics, they are also diverse and can differ greatly from one another. Choice B is incorrect because living organisms can undergo significant changes over time, such as in response to environmental pressures or genetic mutations. Choice C is incorrect because while acquiring materials and energy from food is important for survival, it does not relate directly to the concept of homeostasis. Choice D is partially correct because it does take energy to maintain cell organization, but this does not fully capture the concept of homeostasis.