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Facilitated diffusion is a process by which solutes move across a cell membrane with the help of specific transport proteins, such as carrier proteins or channel proteins. These proteins provide a pathway for the solute to pass through the lipid bilayer without expending energy, as the movement occurs along the concentration gradient. This means that solutes will move from an area of higher concentration to an area of lower concentration until equilibrium is reached. The specificity of the transport proteins ensures that only certain molecules can pass through, allowing for selective permeability.
What else can I help you with?
What is the transport that moves a solute down the concentration gradient?
Simple diffusion
How could you prove or disprove that a specific solute was able to diffuse through w semipermeable membrane?
To prove that a specific solute can diffuse through a semipermeable membrane, you could set up an experiment where the solute is placed on one side of the membrane, and a solution without the solute is on the other side. Over time, you would measure the concentration of the solute on both sides of the membrane. If the concentration increases on the side without the solute, it indicates that diffusion has occurred. To disprove diffusion, you would find that the concentration remains unchanged on the opposing side, suggesting that the solute cannot pass through the membrane.
Three types of passive transport?
Simple diffusion: Small, non-polar molecules move across the cell membrane without the need for energy. Facilitated diffusion: Larger or polar molecules use carrier proteins to move across the cell membrane without energy expenditure. Osmosis: The movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.
What is the eventual result of diffusion describe concentration prior to and at this point?
The eventual result of diffusion is equilibrium. The concentrations prior to this point would be uneven. The solutes then diffuse from areas of high solute concentration to areas of low solute concentration. After diffusion, at equilibrium, the concentration will be even in different areas.
Can osmosis refer to the movement of water or sugar through a membrane?
Osmosis specifically refers to the movement of water across a membrane from an area of low solute concentration to an area of high solute concentration. The movement of sugar through a membrane is typically referred to as diffusion or facilitated diffusion.
What is the transport that moves a solute down the concentration gradient?
Simple diffusion
What is the diffusion of water through the cell membrane is called?
The diffusion of water through the cell membrane is called osmosis. Osmosis occurs when water molecules move across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration in order to equalize the concentration on both sides of the membrane.
How could you prove or disprove that a specific solute was able to diffuse through w semipermeable membrane?
To prove that a specific solute can diffuse through a semipermeable membrane, you could set up an experiment where the solute is placed on one side of the membrane, and a solution without the solute is on the other side. Over time, you would measure the concentration of the solute on both sides of the membrane. If the concentration increases on the side without the solute, it indicates that diffusion has occurred. To disprove diffusion, you would find that the concentration remains unchanged on the opposing side, suggesting that the solute cannot pass through the membrane.
What does facilitated diffusion not require?
Passive diffusion occurs when you have unequal concentrations of solutes on either side of a permeable membrane, therefore facilitated diffusion shouldn't require a difference in solute concentration to drive it.
What is the movement of water through a selectively permeable membrane?
The movement of water through a selectively permeable membrane is called diffusion. Water will always diffuse down a concentration gradient, from high solute concentration to low solute concentration.
What is the difference between facilitates diffusion and solute pumping?
Facilitated diffusion is an example of passive transport, while solute pumping is an example of active transport. This means that facilitated diffusion does not require the use of energy, while solute pumping does. Sometimes, certain particles are either too big or lipid insoulble to pass through the cell membrane. Therefore, they need a protein carrier which acts like a tunnel. This allows these particles to pass through the cell membrane. However, solute pumping is when amino acids, some sugars, and ions are transported b solute pumps. Also, ATP energizes during solute pumping. Facilitated diffusion is an example of passive transport, while solute pumping is an example of active transport. This means that facilitated diffusion does not require the use of energy, while solute pumping does. Sometimes, certain particles are either too big or lipid insoulble to pass through the cell membrane. Therefore, they need a protein carrier which acts like a tunnel. This allows these particles to pass through the cell membrane. However, solute pumping is when amino acids, some sugars, and ions are transported b solute pumps. Also, ATP energizes during solute pumping.
Three types of passive transport?
Simple diffusion: Small, non-polar molecules move across the cell membrane without the need for energy. Facilitated diffusion: Larger or polar molecules use carrier proteins to move across the cell membrane without energy expenditure. Osmosis: The movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.
What is the eventual result of diffusion describe concentration prior to and at this point?
The eventual result of diffusion is equilibrium. The concentrations prior to this point would be uneven. The solutes then diffuse from areas of high solute concentration to areas of low solute concentration. After diffusion, at equilibrium, the concentration will be even in different areas.
How is facilitated diffusion different from passive transport?
Mediated Transport has an extra step of binding to a carrier protein, while Passive transport does not bind to a protein. Both of them however, move along the concentration gradient (High--> Low)
Can osmosis refer to the movement of water or sugar through a membrane?
Osmosis specifically refers to the movement of water across a membrane from an area of low solute concentration to an area of high solute concentration. The movement of sugar through a membrane is typically referred to as diffusion or facilitated diffusion.
What is the effect of the chloride ion concentration on its rate of diffusion in agar?
Increasing the chloride ion concentration will generally increase its rate of diffusion in agar. This is because a higher concentration gradient will drive chloride ions to diffuse more rapidly through the agar medium. Ultimately, diffusion rate is directly proportional to the concentration gradient of the solute.
How can you use diffusion in a sentence?
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. For example, when you spray perfume in one corner of a room, the scent molecules will slowly diffuse and spread throughout the entire room.
