Cell Processes

The property of a membrane or other material that allows some substances to pass through it more easily than others is...?

The diffusion of fluids through membranes or porous partitions is...?

The process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration until equilibrium is reached is...?

The movement of a chemical substance across a cell membrane without expenditure of energy by the cell, as in diffusion is...?

The movement of a chemical substance through a gradient of concentration or electrical potential in the direction opposite to normal diffusion, requiring the expenditure of energy...?

A process of cellular ingestion by which the plasma membrane folds inward to bring substances into the cell...?