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concentration gradient.

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Q: What facilities passive transport across a 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.


What two forces drive the passive transport of ions across a membrane?

Two forces drive the passive transport of ions across a membrane: -the concentration gradient of the ions -the effect of membrane potential (voltage) on the ions


How do carriers proteins facilitate passive transport of molecules across a membrane?

Carrier proteins facilitate passive transport of molecules across a membrane by changing its shape, by using ATP, to allow a substance to pass through the membrane.


How carbon dioxide water and sodium ions are transported across the cell membrane by both passive and active transport?

Carbon dioxide cannot be transported across the membrane by passive transport. However, water and sodium ions can be transported using passive transport.


What facilitated passive transport across a cell membrane?

concentration gradient


What helps molecules diffuse across membrane through transport proteins?

A process known as passive transport helps molecules to diffuse across a membrane. Passive transport does not involve the use of chemical energy, unlike active transport does.


A type of passive transport across a cell membrane that requires special carriers is?

Active transport


A sentence for the word passive transport?

Passive transport refers to the movement of molecules across a cell membrane. An example of a sentence would be: "Passive transport does not require energy to work".


How is passive transport different then active transport?

An example of passive transport would be the process of osmosis (water diffusing between a membrane-- from an area of high concentration to an area of low concentration). It is known as passive transport because no energy is needed in order to move the water across the membrane. When no energy is needed to move the substance it is considered passive transport. On the other hand, when energy IS needed to transport molecules or substances across a membrane it is referred to as active transport. An example of this would be a calcium pump located in the lipid bilayer of a plasma membrane which can transport potassium (K+) ions across it. Energy is needed in order to move those potassium ions across the membrane, and therefore is referred to as active transport.


What is the difference between passive and active transport across the plasma membrane?

Active transport is ATP dependent, whereas passive transport uses only the kinetic energy of the particles for movement across the plasma membrane- mastering A and P homework-


Is diffusiona type of passive transport or active transport?

Passive transport is where materials are transported across a membrane without the use of stored energy. Active transport is where materials are transported across a membrane using ATP, or another source of stored cellular energy. Diffusion is where solutes flow across a membrane in response to a concentration gradient, and requires no energy input to occur. Therefore, diffusion is a form of passive transport.


Distinguish between active and passive transport?

Active Transport is the passage of materials across the membrane through the expenditure of energy. Passive Transport is the passage of materials across the membrane without the expenditure of energy. Bulk Transport is the type of active transport. Diffusion and Osmosis are type of passive transport.