noun[mass noun] Biology
The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
- Complex processes regulate both passive and active transport across the nuclear membrane.
- The electrocytes establish a charge difference across the cell membranes, presumably by active transport of ions.
- The enzyme isoforms seem to have a tissue-specific expression, showing the highest expression levels in cells where intense active transport is expected to occur.
For editors and proofreaders
Line breaks: ac¦tive trans|port
Definition of active transport in:
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.