Layered graphene oxide membranes (GOM) with densely packed sub-nanometer-wide lamellar channels show exceptional ionic and molecular transport properties. Mass and charge transport in existing ...

The alternative to active transport is passive transport, which uses kinetic energy only to move the molecules. Passive transport can only move molecules from a region of higher concentration to lower ...

To transport an ion against its concentration gradient requires energy, which in the biological membrane is supplied by metabolic or chemical reactions. By the Curie–Prigogine principle of ...

This video explains how plants and animals use active transport to move nutrients against a concentration gradient. Plants use protein pumps to absorb mineral ions from the soil. Humans use the same ...