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What is diffusion in the villi?
Same as anywhere else on the cell. The function of the villi is to increase the surface area, and thus the rate of diffusion.
How does the movement of water affect plant cells?
Cells are affected by the movement of water by the diffusion of water that goes in and out of the cell will tell you how it functions.
What type of diffusion helps glucose enter the cell?
facilitated diffusion
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 is the primary cause of diffusion?
The primary driving force of facilitated diffusion are surface cell proteins. These proteins transport substances in and out of the cell.
What is diffusion in the villi?
Same as anywhere else on the cell. The function of the villi is to increase the surface area, and thus the rate of diffusion.
How does number of protein channels affect diffusion in a cell.?
The number of protein channels in a cell directly affects the rate of diffusion of molecules across the cell membrane. A higher number of protein channels allow for more molecules to pass through, leading to faster diffusion. Conversely, a lower number of protein channels may result in slower diffusion rates.
How does surface area to volume ratio of a cell affect rate of diffusion?
The surface area to volume ratio of a cell affects the rate of diffusion in that the higher the ratio, the faster the rate of diffusion. This is a directly proportional relationship.
What does it mean for a cell to be equilibrium?
It is after diffusion when the number of molecules is equal in all areas.
How is the structure of the villi adapted to their function?
The villi is only one cell thick so it easier to absorb.
What adaptation does the small intestine have to help diffusion?
Diffusion is needed in the small intestine so that nutrients from digested food can be diffusedinto the blood vessels of the intestine wall. The lining of this wall is called the mucosa and is covere in tiny wrinkles that form indents in the surface. Not only does this increase surafce area but there are tiny hairs called villi as well that add even more surface area. The villi are also covere in microvilli. Rhis means more surface for nutrient absorption. Furthurmore these villi are only one cell thick meaning substances cam easily be exchanged to and from the blood vessels.
How are diffusion and facilitated diffusion similar?
Substances enter a cell through the cell membrane
Where diffusion occur?
Diffusion occurs on the cell membrane.
How does solute concentration affect diffusion osmosis?
Solute concentration affects diffusion and osmosis by creating a concentration gradient. Higher solute concentration outside the cell will cause water to move out of the cell, leading to a decrease in cell volume. Lower solute concentration outside the cell will cause water to move into the cell, increasing its volume.
What are four things that might affect rate of diffusion of materials in body fluids?
Factors that affect the rate of diffusion,the effect of osmosis on cells qxygen can easily diffuse across a cell membrane whether the chemical substance is water -soluble or lipid soluble if we surround the cell with a fluid that's similarly 80% water and 20% other stuff on the outside of the cell.
Why are villi so small?
Villi are so small because they are only made of one cell- they are single celled organisms
What cell part plays a role in diffusion?
The plasma membrane of a cell plays a role in diffusion.
