Tonicity is responsible for determining which direction water will diffuse across the plasma membrane of cells.
Answer: making the body produce anti bodies
Explanation: that’s just what the body does.
Cells are the tiniest structural and functional unit of a living organism. They consist of nucleus and cytoplasm that are enclosed in a membrane. The cells are invisible to the naked eye and hence a microscope was needed to observe them. Robert Hooke was the first scientist to observe them under the microscope.