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How can active transport differ from passive transport?
Active transport requires energy input to move molecules against their concentration gradient, while passive transport does not require energy and moves molecules along their concentration gradient. Active transport usually involves the use of transport proteins, such as pumps or carriers, while passive transport relies on diffusion or facilitated diffusion.
How do diffusion facilitated diffusion osmosis and active transport differ?
1Diffusion (which includes facilitated diffusion) and osmosis are passive. This means that they do not require any energy input; they go ahead spontaneously.Diffusion happens in a cup of tea, particularly just after you add some sugar. The dissolved sugar will gradually spread through the liquid. (But it's quicker to invest in a teaspoon!)The active in active transport refers to the need for a supply of energy. In a cell this energy often comes from the hydrolysis of ATP.2Osmosis involves the movement of a solvent, which in cells is always water. Many substances can diffuse, but in osmosis it is only water molecules that move.3Osmosis requires a membrane that is permeable to water but not to solutes. Such a membrane is known as a semi-permeable membrane (or selectively-permeable membrane, or differentially-permeable membrane).4Diffusion can occur anywhere that atoms, ions, or molecules are free to move. Facilitated diffusion simply means diffusion across a membrane through special places in the membrane.(This is like people going in and out of a room. In theory we could take a sledgehammer to the wall and enter anywhere, but our entry and departure is facilitated by doors. Many substances cannot cross a phospholipid bilayer, and must find special crossing points.)Substances cross cell membranes by facilitated diffusion through special proteins, called channel proteins and carrier proteins.5Active transport is always through carrier proteins. This kind of protein is highly selective (for example, one type of carrier protein moves sodium ions one way and potassium ions the other way across the membrane) and changes shape during the process, reverting to its former shape when the substance has passed through.
Do carrier proteins require energy?
By definition, osmosis does not require the transport of particles or energy in the process. Osmosis is the movement of water through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.
What is the movement of a substance from a small space to a larger space?
The movement of a substance from a small space to a larger space is known as diffusion. Diffusion occurs due to the random movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.
Osmosis does it need energy?
No, actually diffusion is a kind of passive transport, and osmosis is a kind of diffusion. Any passive transport can happen without energy (contrary to active transport). Since, all the things you listed were passive transport, they happen down the concentration gradient and need no ATP.
Is facilitated diffusion active?
No. Facilitated diffusion is a type of passive transport.
In what ways are active transport and facilitated diffusion similar?
Active transport and facilitated diffusion are similar in that they both involve the movement of molecules across a cell membrane, but they differ in that active transport requires energy input from the cell, while facilitated diffusion does not.
Is osmosis an example of facilitated diffusion or active transport?
Osmosis is an example of passive transport, specifically a type of facilitated diffusion. In osmosis, water molecules move across a semipermeable membrane from an area of high concentration to an area of low concentration without the use of energy.
How is active transport different than simple and facilitated diffusion?
simple and facilitated diffusion don't require energy and are forms of passive transport. Active transport requires energy
What are Vesicle mediated transport is a type of?
facilitated diffusion, secondary active transport and active transport
How is facilitated diffusion diferant froma an active transport?
Facilitated diffusion is a type of passive transport which does not require the cell to expend energy.
How do products of the cell get out of the cell?
Diffusion, facilitated diffusion, passive transport, facilitated transport (?) and active transport ... unless we are referring to viral or bacterial products.
Is diffusion through ion channels a form of active transport?
Facilitated diffusion, or diffusion through ion channels, is not a form of active transport. It is a spontaneous passive transport.
What are the types of movement through a membrane?
Osmosis, diffusion, facilitated diffusion, active transport
How does diffusion take place in the body?
P.I.S.O.- Potassium in Sodium out facilitated diffusion, active transport , and passive transport and simple diffusion.
What does active transport and facilitated diffusion have in common?
Both active transport and facilitated diffusion are methods of moving substances across cell membranes. Active transport requires energy input to move substances against their concentration gradient, while facilitated diffusion does not require energy and moves substances along their concentration gradient with the help of transport proteins.
Is facilitated diffusion an active transport?
no it is not because it does not require the use of ATP
