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What is an example of passive transport across a cell membrane?
Wiki User
∙ 10y ago
Osmosis is a type of passive transport. It is specialized diffusion. It can occur through the membrane itself. Or through an aquaporin channel protein.
Other forms of passive transport include: simple diffusion and facilitated (uses channel protein) diffusion.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoDiffusion and osmosis (diffusion of water) are both types of passive transport. Passive transport transports molecules and substances from an area of high concentration to low concentration, while active transport does the opposite and transports substances from areas of low concentration to areas of high concentration. The whole point of these Transports is to reach a state of equilibrium, either dynamic or static. Dynamic equilibrium is equilibrium in which changes and movements of molecules or substances are still occurring, but there are no net changes in the overall concentrations. Static equilibrium is equilibrium in which there are absolutely no changes occurring and not one thing is moving.
The basic definition of passive transport is the diffusion of a substance across a biological membrane (typically a cell membrane). Small solute molecules can easily pass the selectively permeable cell membrane in this way of passive transport. Passive transport does not require an expenditure of energy, whereas active transport does.
Example of Passive Transport: The diffusion of water (H2O) molecules across a cell membrane.
Wiki User
∙ 10y agowhich of the afollowing is an example of passive transport across a cell membrane
Wiki User
∙ 12y agoSimple diffusion
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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
Which type of transport requires assistance from membrane proteins?
cellular transport nop, is passive transport
What is it called when the movement of materials through a cell membrane without using the cells energy?
Passive transport does not use energy to pass through a cell membrane. active transport uses energy to pass through a cell membrane.
What is the difference between passive and active transport across the cell membrane?
Wouldn't it be that active transport requires enegry and passive doesn't? Passive transport occurs when the concentration of something on one side of membrane is different from the concentration on the other side. It occurs when that substance can pass through the membrane, and always in the direction of more -> less. No energy is required to make the substance move; in fact, this movement generates energy. This is like rolling a rock down a hill--it just does it on its own. Active transport occurs in the opposite direction, from less -> more. It requires energy for transport. This is like rolling a rock up a hill--you have to push it the entire way! Both involve the transport of a substance across a membrane, and the change in concentrations on different sides of a membrane. Both are also important to the proper functioning of a cell. Active transport requires energy, but passive transport requires none. Active transport requires a special protein to make the transport occur, but passive transport requires none.
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".
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.
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 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 facilities 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
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.
