Final answer:
Osmosis is the diffusion of water across a membrane in response to osmotic pressure. Osmoregulation in the body maintains salt and water balance. The kidneys play a role in maintaining electrolyte and non-electrolyte balance to maintain homeostasis.
Step-by-step explanation:
Osmosis is the diffusion of water across a membrane in response to osmotic pressure caused by an imbalance of molecules on either side of the membrane. Osmoregulation is the process of maintaining salt and water balance (osmotic balance) across membranes within the body. The body's fluids contain electrolytes and non-electrolytes, which contribute to osmotic balance. The cell membranes in the body are semi-permeable membranes, allowing the movement of solutes and water. The movement of water through osmosis can be seen in the kidneys, which play a role in maintaining electrolyte and non-electrolyte balance to maintain homeostasis.