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if it is against a concentration difference.

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βˆ™ 2009-07-26 11:14:19
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Q: Define When a cell use energy to move material across cell membrane?
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What is meant by passive transport of material across a membrane?

"Passive" mean that it does not require energy, therefore the passive transport of material across the membrane means that it can transport the material (cells or whatever) without the function of energy across the membrane.


The energy requiring process that moves material across a cell membrane against a concetration difference is called?

The energy requiring process that moves material across a cell membrane against a concentration difference is called?


What is the movement of materials across a membrane that requires energy input called?

Active transport requires energy and proteins to move the materials across the cell membrane. This is in contrast to osmosis, which doesn't require energy to move the material.


Movement across a membrane that does require energy?

Movement across a membrane that does require energy is called active transport.


Define active transport?

The movement of ions or molecules across a cellular membrane from a lower to a higher concentration, requiring the consumption of energy.


When an input of energy is required to move material through a cell membrane what transport takes place?

Active transport requires energy to move substances across a cell membrane against their gradient.


The energy-requiring process that moves material across a cell membrane against a concentration difference is called?

Active transportation


Facilitated diffusion across a biological membrane requires?

Facilitated diffusion across a biological membrane requires energy. Passive diffusion across a cellular membrane does not require any energy from the cell.


Is facilitated diffusion an active or passive transport and why?

If the cell expends energy to actively transport material across the membrane we call that active transport.


Does the sodium potassium pump require energy to move ions across the cell membrane?

to move the ions across the membrane,its neccassry to give the energy for to the ions.


What is the process of moving materials across membrane with out expending energy?

The process of moving materials across the cell membrane without the expenditure of energy is called passive transfer


Mechanisms that require energy to move substances across to plasma membrane are called?

Active transport is the energy to move substances. The substances moves across the plasma membrane.

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