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active transport

   Also found in: Medical, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.
active transport
n.
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: active transport across a cell membrane.

active transport
n
(Life Sciences & Allied Applications / Biochemistry) Biochem Physiol a process by which molecules are enabled to pass across a membrane from a region in which they are in a low concentration to one of high concentration; this requires the expenditure of energy in metabolism and is assisted by carrier proteins, commonly referred to as pumps

active transport
The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. Active transport requires the assistance of a type of protein called a carrier protein, using energy supplied by ATP.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.active transport - transport of a substance (as a protein or drug) across a cell membrane against the concentration gradientactive transport - transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy
drug - a substance that is used as a medicine or narcotic
transport - an exchange of molecules (and their kinetic energy and momentum) across the boundary between adjacent layers of a fluid or across cell membranes


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ACF is building a collaboration between businesses aimed at getting political support towards the creation of 'smart cities', including: a national smart energy grid; an expansion of public and active transport opportunities complemented by a plug-in electric vehicle network; and a massive up-scaling to deliver or set world best practice performance standards for new and existing buildings that foster local innovation.
Metabolism is suppressed and less ATP metabolism occurs, active transport declines, mitochondrial activity declines and lysosomes begin to rupture.
The website is updated regularly and includes information on local events, different sports and clubs, active transport, low cost activities for children and families, and the benefits of physical activity.
 
 
 
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