During ionic flux, uptake of ions into inner space is

The movement of ions is called flux. The movement of ions into the cell is called influx and outward migration of ions is known as efflux. The energy is considered to be involved in the transport of such free ions across the membrane. The absorption of ions, involving the use of metabolic energy, is called active absorption. Energy used in these mechanisms comes from metabolic activities. Mineral absorption is mainly an active process.