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What is the overall goal of diffusion osmosis and facilitated diffusion?
The overall goal of diffusion, osmosis, and facilitated diffusion is to achieve equilibrium by moving substances across cell membranes. Diffusion involves the passive movement of molecules from an area of higher concentration to lower concentration. Osmosis specifically refers to the movement of water across a semi-permeable membrane to balance solute concentrations. Facilitated diffusion uses specific transport proteins to help molecules that cannot easily cross the membrane to move down their concentration gradient.
How do diffusion and osmosis differ from one another?
Diffusion and osmosis differ because diffusion is the process by which molecules spread out, or move from areas with high concentration to low concentration, and osmosis is the diffusion of water. Osmosis is a type of diffusion relating to water. It is usually used to describe the diffusion of water across a membrane (such as the cell membrane). Osmosis is also defined as the flow of solvent from a region of higher pressure toward a region of low pressure.
Why isnt cellular energy required for the passenger molecule to be carried across the cell membrane by the carrier molecule?
Because of facilitated diffusion(, which nutralizes it from a higher to a lower concentration.)
Which of the following required the most ATP to move the molecule across a plasma membrane?
Ion moving against a concentration gradient
Movement across the cell membrane made possible by a protein embedded in the cell membrane?
It is a selectively permeable membrane that allows certain substances in and out, but keeps harmful substances from entering the cell. It could be compared to the security guard at the door of an airport that makes sure that nobody dangerous gets in or out.
When does diffusion occur across a cell membrane?
Diffusion across a cell membrane occurs when concentrations of a substance are higher either inside or outside the cell.
What motion of particles across a membrane requires energy?
Movement across a membrane that does require energy is called active transport.
Does facilitated diffusion require energy for the movement of molecules across the cell membrane?
No, facilitated diffusion does not require energy for the movement of molecules across the cell membrane.
Does facilitated diffusion require energy for the transportation of molecules across the cell membrane?
Facilitated diffusion does not require energy for the transportation of molecules across the cell membrane.
Does facilitated diffusion require energy to transport molecules across the cell membrane?
Facilitated diffusion does not require energy to transport molecules across the cell membrane.
What is the process that utilizes a carrier to move marerials across the plasma membrane in the direction of the concentration?
Diffusion is what carries materials across the plasma membrane. The diffusion cannot be moved across water.
What is the diffusion of water across the semipermeable?
Diffusion of water across a semipermeable membrane is a type of simple diffusion given the special name of osmosis.
What is the diffusion of water molicules across a membrane?
Osmosis
What is the diffusion of water across a preamble membrane?
OSMOSIS
Is a special type of diffusion that involves moving across a cell membrane?
osmosis is a special type of diffusion that involves water moving across a cell membrane hopefuly this helped :)
The process where a nonpolar molecule can just passively get across a membrane is called?
facilitated diffusion
What is the diffusion of water across a semipermeable memberane?
Diffusion of water across a semipermeable membrane is a type of simple diffusion given the special name of osmosis.
