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Apart from osmosis and diffusion the major mechanism for individual molecules to move is by active transport. Active transport is the movement of molecules against their concentration gradient (from a low to a high concentration) using energy supplied by the cell. It differs from diffusion which can only work down a concentration gradient ie from a high concentration to a low concentration. It also needs a source of energy supplied by a living cell, which is not needed for difusion. In cells, energy for active transport is supplied by respiration. See http://www.bbc.co.uk/schools/gcsebitesize/Biology/cellprocesses/2diffusionandosmosisrev1.shtml
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What are some molecules that move by diffusion and osmosis?
Molecules that move by diffusion include oxygen, carbon dioxide, and water. During osmosis, water molecules move across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
What word includes diffusion osmosis and facilitated diffusion?
The word that includes diffusion, osmosis, and facilitated diffusion is "passive transport." These are all types of passive transport processes where molecules move across a membrane without the need for energy input.
Diffusion osmosis active transport all of these are methods by which a cell?
Diffusion, osmosis, and active transport are methods by which a cell can move molecules across its membrane. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Osmosis is the diffusion of water molecules across a selectively permeable membrane. Active transport requires energy to move molecules against their concentration gradient.
Diffusion and osmosis are forms of?
Diffusion and osmosis are forms of passive transport, where molecules move across a membrane without the need of energy. Diffusion involves the movement of particles from an area of high concentration to an area of low concentration, while osmosis specifically refers to the movement of water molecules across a selectively permeable membrane.
Molecules tend to move from an area where they are more concentrated to an area where they are less concentrated This process is called?
This process is called diffusion, where molecules move down their concentration gradient to achieve a uniform distribution.
What are some molecules that move by diffusion and osmosis?
Molecules that move by diffusion include oxygen, carbon dioxide, and water. During osmosis, water molecules move across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
What word includes diffusion osmosis and facilitated diffusion?
The word that includes diffusion, osmosis, and facilitated diffusion is "passive transport." These are all types of passive transport processes where molecules move across a membrane without the need for energy input.
In what ways do molecules move?
it moves by diffusion, osmosis and active transport
What does concentration have to do with osmosis and diffusion?
Concentration plays a critical role in osmosis and diffusion by determining the direction of the movement of molecules. In osmosis, water molecules move from an area of low solute concentration to an area of high solute concentration. In diffusion, molecules move from an area of high concentration to an area of low concentration to reach equilibrium.
Diffusion osmosis active transport all of these are methods by which a cell?
Diffusion, osmosis, and active transport are methods by which a cell can move molecules across its membrane. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Osmosis is the diffusion of water molecules across a selectively permeable membrane. Active transport requires energy to move molecules against their concentration gradient.
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 diffusion of oxygen all about?
Diffusion is the main method by which molecules move across the cell membrane. during diffusion, molecules move from an area of higher concentration, to an area of lower concentration. What is Osmosis? Osmosis is the transport of water from an area of high concentration, to an area of low concentration water moves inside and inside of the cell membrane by osmosis. osmosis is the diffusion of water!
Diffusion and osmosis are forms of?
Diffusion and osmosis are forms of passive transport, where molecules move across a membrane without the need of energy. Diffusion involves the movement of particles from an area of high concentration to an area of low concentration, while osmosis specifically refers to the movement of water molecules across a selectively permeable membrane.
Molecules tend to move from an area where they are more concentrated to an area where they are less concentrated This process is called?
This process is called diffusion, where molecules move down their concentration gradient to achieve a uniform distribution.
Diffusion and osmosis are types of active transport true or false?
False. Diffusion and osmosis are both types of passive transport, where molecules move from an area of higher concentration to an area of lower concentration without the need for energy input.
Gas exchanges occur mainly by osmosis?
No, only water molecules move by osmosis. Gases are normally exchanged by the process of diffusion.
What two processes move large packets of molecules across the cell membrane?
osmosis and diffusion
