Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'inorganic ion homeostasis'?

A. Any process involved in the maintenance of an internal steady state of phosphate ions within an organism or cell.
B. Any process involved in the maintenance of an internal steady state of lipid within an organism or cell.
C. Any process involved in the maintenance of an internal steady state of inorganic ions within an organism or cell.
D. A homeostatic process involved in the maintenance of a steady state level of a chemical within extracellular body fluids, such as blood, xylem or phloem, of a multicellular organism. This is distinct from maintenance of cellular homeostasis, which occurs within a cell.

Answer: Any process involved in the maintenance of an internal steady state of inorganic ions within an organism or cell.