Final answer:
Every living cell does exist in a liquid environment, which is true. The internal and external surroundings of a cell are usually aqueous, supporting essential biochemical processes necessary for the cell's functions.
Step-by-step explanation:
The statement every living cell exists in a liquid environment is true. In biology, it is understood that all living organisms are composed of cells, which are the basic unit of life. Cells are surrounded by a liquid environment, which is crucial as it allows for the many biochemical reactions that sustain life. This liquid environment is typically an aqueous, or water-based, medium where various essential substances are dissolved. About 70-80% of a cell's composition is water, making it an indispensable component for the chemical reactions necessary for cells to function. The cytoplasm within cells is also a gel-like substance primarily made up of water and dissolved chemicals, illustrating how intrinsic the liquid environment is to cell structure and function.