Questions: True or False Question To regulate their own activity, cells must maintain the same fluid composition between intracellular and extracellular fluid compartments. True False

The answer is False: To regulate their own activity, cells must maintain the same fluid composition between intracellular and extracellular fluid compartments.

Explanation:

• Cells do not maintain the same fluid composition between intracellular and extracellular fluid compartments. In fact, the composition of these fluids is quite different, which is essential for cellular function.
• Intracellular fluid (ICF) is rich in potassium ions (K+) and has a higher concentration of proteins and other solutes compared to extracellular fluid (ECF).
• Extracellular fluid, which includes interstitial fluid and blood plasma, is rich in sodium ions (Na+) and chloride ions (Cl-).
• The differences in ion concentrations between the ICF and ECF are crucial for processes such as nerve impulse transmission, muscle contraction, and maintaining cell volume.
• Cells use mechanisms like active transport and selective permeability of the cell membrane to maintain these differences, which are vital for their proper functioning.

In summary, the statement is false because maintaining different fluid compositions between intracellular and extracellular compartments is necessary for cellular regulation and function.