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For diffusion to occur there must be?
For diffusion to occur there needs to be a concentration gradient. Which means that the concentrations on the two sides must be different. In diffusion the particles flow from high concentration to low concentration.
In order for substances to move through the cell membrane what must there be?
For passive diffusion, a concentration gradient which uses pore proteins. For active diffusion, carrier proteins and energy are required.
Why is concentration gradient needed for diffusion to work?
They want to be a equilibrium (have the same concentration both inside and outside the semi-permeable membrane). Therefore they will move from a higher concentration to a lower in an effort to gain equilibrium. This does not require energy, unlike active transport.
The movement of particals from areas of high concentration to areas of low concentration is called?
Diffusion is the movement of particles from an area of high concentration to an area of lower concentration. Active transport is the movement of substances from lower to higher concentration across a semi permeable membrane that must have a specific protein carrier and cell expenditure of energy.
What method of transport is required when molecules must be moved against the concentration gradient?
There are multiple ways for cells to transport things across a difference in concentration. The most common process is diffusion, which is the movement from high concentration to low. Osmosis is the most popular example of this. Facilitated Diffusion is basically diffusion with the use of proteins that are specified for certain molecules. Active Transport is the method by which molecules are transported from low concentration to high concentration.
What happens when concentration gradient 0?
When the concentration gradient is 0, no flow is allowed to go through the cell wall. To get motion through a membrane, the concentration gradient must be higher than 0.
For diffusion to occur there must be?
For diffusion to occur there needs to be a concentration gradient. Which means that the concentrations on the two sides must be different. In diffusion the particles flow from high concentration to low concentration.
What is required when cells must move materials against a concentration gradient?
Active transport which requires ATP.
What is the transport of materials against a concentration gradient called?
The process of moving materials against a concentration gradient is called active transport. Active transport generally uses a protein pump to move molecules from an area of low concentration to an area of high concentration; in order to perform an active transport, the cell must use some of its energy to initiate the reaction.
In order for substances to move through the cell membrane what must there be?
For passive diffusion, a concentration gradient which uses pore proteins. For active diffusion, carrier proteins and energy are required.
What must there be for diffusion to occur?
a gradient
Why is concentration gradient needed for diffusion to work?
They want to be a equilibrium (have the same concentration both inside and outside the semi-permeable membrane). Therefore they will move from a higher concentration to a lower in an effort to gain equilibrium. This does not require energy, unlike active transport.
For diffusion to occur which condition must be met?
Diffusion occurs when a substance moves from an area of high concentration to an area of low concentration. This will happen naturarally without disruption, But is more common (and will happen faster) in a warm environment.
What is a demonstration to show active transport?
Active transport is when cells must move materials in a direction against a concentration gradient. Proteins transporting molecules across cell membranes is an example. Active transport requires energy as opposed to passive transport
What process the cell must use to allow the protein to enters and why?
The process the cell must use to allow the protein to enter is rather simple and uncomplicated. The cell uses the process of osmosis and diffusion along a concentration gradient to allow for passage in and out of the cell.
What process the cell must use to allow the protein to enter and why.?
The process the cell must use to allow the protein to enter is rather simple and uncomplicated. The cell uses the process of osmosis and diffusion along a concentration gradient to allow for passage in and out of the cell.
What are the three things that must happen in order for gas exchange to be efficient?
1. a moist surface 2. concentrated gradient 3. semi permeable membrane
