active transport

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active transport

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.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

active transport

(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

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ac′tive trans′port

the movement of ions or molecules across a cellular membrane from a lower to a higher concentration.

[1960–65]

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. The energy needed for active transport is supplied by ATP.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

active transport

An energy-requiring process which carries substances across cell membrane against a concentration gradient.

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Noun

active 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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- create more accessible cycling and walking route to promote active transport

Phase 4 of a whole systems approach to obesity

This disproportionately affects the most vulnerable in the country: the young and the elderly, the women, the poor, the working class and the persons with disabilities who mostly rely on public transportation and active transport in every part of the country,' he added.

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This disproportionately affects the most vulnerable in the country, the young and the elderly, the women, the poor, the working class and the persons with disabilities who mostly rely on public transportation and active transport in every part of the country," he added.

House bill seeks to make commuter needs a 'paramount concern' in transport policy

With more space and safer roads, active transport would be more attractive.

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In China, he had put the figure at S0 billion.Exclusion of the Kisumu line in the latest railway plan now edges the lakeside town from one of Kenya's most active transport corridors.

Hope of reviving railway line to Kisumu dimmed

Promoting cycling with active transport for community well-being

Reconnecting Dubai

BIKE IT ONE of the most popular forms of active transport, switching the car for a bike, is a no-brainer.

Commute your way to fitness; USE YOUR JOURNEY TO OR FROM WORK FOR THOSE VITAL 30 MINUTES OF EXERCISE A DAY, SAYS MICHELLE CHILDS

For example, introducing active transport options such as cycling will help increase physical activity that can help prevent diseases like diabetes, cancer and heart disease.

A million lives could be saved by 2050 through climate action: WHO

Residents can enjoy economic, health and social benefits provided by buildings retrofitted with energy efficient features, as well as enjoying health benefits from active transport and creature comforts from redundancy in electricity transmission systems.

Fayetteville Taking Action On Clean Energy

Part of the answer, I think, is to provide kids with high-quality physical education, but I think we recognize that alone will not be enough." The comprehensive school activity model calls for not only enriching school PE programs but also incorporating active transport to school, classroom activity, active learning, and after-school programs--activity in all settings during the school day.

New HHS physical activity guidelines break fresh ground

She suggested to parents must also try to encourage children by helping them engage in active transport like bicycling.