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Why is the term 'net movement' used in diffusion instead of 'movement'?
Wiki User
∙ 15y ago
If you open an account and deposit $100 in a bank, then withdraw $60 the following day, the result of all this high finance is a balance of $40 in your account.
You could say that some money has moved into the bank, some out, but on balance the movement was inward. That movement is net movement.
Net movement = (movement in one direction) - (movement in the opposite direction)
It is much the same with diffusion, whether in and out of a cell or anywhere else.
All atoms, ions, and molecules are continually on the move. (The higher the temperature, the faster they zip about.) But they are moving randomly in all directions.
The reason diffusion occurs is that the atoms are more crowded in one place (there is a higher concentration there). By random movement and rebounds from collisions, inevitably the atoms become more evenly dispersed about the available space.
During the time that the concentrations in different places are evening up, there is on balance a flow away from the region of higher concentration. But on balance. Some atoms are going the other way, like people battling to get into a city in the late afternoon against the homeward-bound commuters.
Wiki User
∙ 15y ago
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What is the difference between diffusion and active transport?
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How are diffusion and filtration alike?
Both move down concentration gradient through a partially permeable membrane, and both do not require energy. Diffusion involves the movement of particles or solute from an area of high concentration to an area of low concentration. Osmosis is the movement of water from where it is in high concentration to where it is in low concentration.
Are diffusion and osmosis the same process?
No osmosis is actually a special term used just for the movement of water across a cell membrane. We don't use that term for anything else. Diffusion is for the movement of other substances but not always involving a cell membrane. For example, scent can diffuse in the air. Science tends to be like this but it is important to use exact terms.
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What is the different in osmosis and diffusion?
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What diffusion mean?
Where there are two (or more) substances in contact, diffusion happens as particles of one substance move from an area where there are a lot of those particles to an area where there are fewer of those particles. The process can happen in the gas, liquid and solid phase. Note, diffusion is driven by random movement of the particles not by mechanical mixing, the phase of the system will therefore largely determine the rate of diffusion. The term is also used in a more abstract manner to describe spreading of something more widely. The movement of a substance from a region of high concentration into a region of low concentration is called diffusion.
What is the term used to describe the unique rotational movement of venus?
The term of the unique rotational movement of Venus is retrograde
Define term gradient give definition of fick's law?
Fick's laws of diffusion describe diffusion and can be used to solve for the diffusion, the concentration gradient (spatial derivative), or in simplistic terms the concept.
What is the definition of osmosis?
The four main kinds of passive transport are diffusion, facilitated diffusion, filtration and osmosis. Passive transport is the movement of a substance across a cell membrane with its concentration gradient (from high to low concentration) and it uses no energy. Osmosis is a special term used when water is the substance being moved.
What is another term to use instead of used for?
The term "used for" might be replaced by "employed for" or "utilized for."
What is the difference between diffusion and active transport?
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What is the term used to describe the rate of an object's movement?
The term used to describe the rate of an object's movement is speed or velocity. Velocity is the same as speed but also measures direction.
What is term used to describe the rate of an object's movement?
The term used to describe the rate of an object's movement is speed or velocity. Velocity is the same as speed but also measures direction.
What is the movement dunes called?
One term used is drifting.
