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Is the movement of molecules across a membrane down the concentration gradient a passive or active process?
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What are the two things needed for osmosis to take place?
Two things needed for osmosis to take place are a semipermeable membrane that allows the passage of water molecules and a concentration gradient of solute molecules across the membrane.
Does active transport involve the movement of molecules against the concentration gradient?
Yes, active transport involves the movement of molecules against the concentration gradient.
Does osmosis work with or against the concentration gradient?
Osmosis works with the concentration gradient, meaning that it involves the movement of water molecules from an area of low solute concentration to an area of high solute concentration in order to equalize the solute concentration on both sides of the membrane.
How do molecules move up a concentration gradient?
Molecules move up a concentration gradient through a process called passive transport. This involves the movement of molecules from an area of low concentration to an area of high concentration, driven by the natural tendency of molecules to spread out and reach equilibrium. This movement can occur through processes such as diffusion or osmosis, where molecules move across a membrane without the need for energy input.
How does active transport enable the movement of molecules against their concentration gradient?
Active transport enables the movement of molecules against their concentration gradient by using energy from ATP to pump the molecules across the cell membrane. This process allows the cell to maintain a higher concentration of certain molecules inside the cell compared to outside, which is necessary for various cellular functions.
Does osmosis go with the concentration gradient?
Yes, osmosis involves the movement of water molecules across a selectively permeable membrane from an area of high water concentration to an area of low water concentration. This movement occurs in response to the concentration gradient of water molecules.
Movement of molecules through a membrane by filtration depends upon the presence of?
pores or openings in the membrane that allow the molecules to pass through based on their size and charge. The movement is driven by the concentration gradient, with molecules moving from an area of higher concentration to an area of lower concentration. Size, charge, and concentration gradient all play a role in the filtration process.
The net direction that an ion or molecule moves is?
determined by the concentration gradient and electrical gradient across the membrane. If the net movement of ions or molecules is down their concentration gradient and towards the opposite electrical charge, they will move across the membrane.
What are the two things needed for osmosis to take place?
Two things needed for osmosis to take place are a semipermeable membrane that allows the passage of water molecules and a concentration gradient of solute molecules across the membrane.
Is osmosis with or against concentration gradient?
Osmosis is with the concentration gradient, meaning that it involves the movement of water molecules from an area of low solute concentration to an area of high solute concentration across a semi-permeable membrane.
Does active transport involve the movement of molecules against the concentration gradient?
Yes, active transport involves the movement of molecules against the concentration gradient.
Does osmosis work with or against the concentration gradient?
Osmosis works with the concentration gradient, meaning that it involves the movement of water molecules from an area of low solute concentration to an area of high solute concentration in order to equalize the solute concentration on both sides of the membrane.
How do molecules move up a concentration gradient?
Molecules move up a concentration gradient through a process called passive transport. This involves the movement of molecules from an area of low concentration to an area of high concentration, driven by the natural tendency of molecules to spread out and reach equilibrium. This movement can occur through processes such as diffusion or osmosis, where molecules move across a membrane without the need for energy input.
What determines the direction of net movement across a cellmembrane?
The direction of net movement across a cell membrane is determined by the concentration gradient of a substance, with molecules moving from an area of high concentration to an area of low concentration. Additionally, the permeability of the membrane to the specific molecules also influences their movement. External factors such as temperature and pressure can also impact the direction of movement across the membrane.
How does active transport enable the movement of molecules against their concentration gradient?
Active transport enables the movement of molecules against their concentration gradient by using energy from ATP to pump the molecules across the cell membrane. This process allows the cell to maintain a higher concentration of certain molecules inside the cell compared to outside, which is necessary for various cellular functions.
Which process would be describe the movement of sugar molecules through membrane from a region of higher concentration to a region of lower concentration?
This process is called passive transport or facilitated diffusion, where sugar molecules move down their concentration gradient without requiring energy input from the cell. Proteins in the membrane facilitate the movement of sugar molecules across the membrane.
What term describes the different in the concentrations of a substance across a cell's membrane?
concentration gradient
