Final answer:
Microbes often maintain an isotonic solute concentration in their cytoplasm, meaning that the concentration of solutes inside the cell is equal to the concentration of solutes in the extracellular fluid.the answer is isotonic
Step-by-step explanation:
Microbes often maintain an isotonic solute concentration in their cytoplasm. This means that the concentration of solutes inside the cell is equal to the concentration of solutes in the extracellular fluid. In an isotonic condition, there is no net water movement, and the cell's size remains unchanged.