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Facilitated diffusion is the process in which a membrane protein helps (facilitates) a substance pass through the bilayer. For example, water is too big a molecule to passively diffuse through the phospholipid bilayer and does not need to be actively imported. So the solution to this, is to put a transmembrane protein in the bilayer to form a channel big enough for the water molecule to pass through. I don't know how much you need to know, but just as a side note, the channel protein will be in its secondary structure, either as a beta sheet or alpha helix. I hope that helps.
What else can I help you with?
How do you calculate diffusion in a given system?
Diffusion in a system can be calculated using Fick's law of diffusion, which states that the rate of diffusion is proportional to the concentration gradient. The formula for calculating diffusion is D (C2 - C1) / (X2 - X1), where D is the diffusion coefficient, C is the concentration, and X is the distance.
What is a catchy title for osmosis and diffusion?
"Flowing Through Membranes: Osmosis and Diffusion Explained"
What is the movement of particles from a highly concentrated area to a less concentrated area called?
Actıve absorbtıon
What is a synonym for osmosis?
assimilation , diffusion , passage
What is a process that spreads substances through a gas or liquid?
Diffusion is the process that spreads substances through a gas or liquid. It involves the movement of particles from an area of high concentration to an area of low concentration until they reach a state of equilibrium.
By what process are bacteria brought into a cell?
Bacteria can enter a cell through a process called phagocytosis, where the cell engulfs the bacteria using its cell membrane. Alternatively, some bacteria can invade cells by injecting proteins that manipulate the host cell machinery to gain entry.
How is faciliated transport similar to simple diffusion?
Facilitated and simple diffusion both transport solutes along a concentration gradient and neither processes require any ATP expenditure.
Does faciliated diffusion require energy?
Facilitated diffusion does not require energy because it relies on the use of carrier proteins to transport molecules across a cell membrane down their concentration gradient. These carrier proteins facilitate the movement of specific molecules such as glucose or ions without the need for ATP or energy input.
What type of transport is faciliated diffusion?
Neither of these require energy. Diffusion occurs naturally when a higher concentration of a substance exists on one side of a membrane than the other; molecules will enter into the area of lesser concentration until there is an equilibrium on both sides. Active transport requires the energy of the cell.
What is diffusion a natural movement of molecules from?
in the normal diffusion the substance move from the area of greater concentration to that of lower concentration. .... but i never know what do we mean be "faciliated" plz specify
How does faciliated diffusion differ from simple diffusion?
Facilitated diffusion needs some sort of help. Often it would be a protein. Simple diffusion doesn't. If you spill something smelly on the floor in the kitchen, you will smell it all through the house. It will spread by simple diffusion.
How does the structure of the plasma membrane determines the route taken by vitamin C and vitamin D?
Vitamin C is water soluable so the only way it can be transported is by faciliated difficusion using a channel protein. Channel proteins allow polar, watersoluable substances and ions to pass across the cell membrane using faciliated diffusion. Vitamin D is lipid soluble therefore it can pass through using simple diffusion because the phospholipid bilayer lets it pass through down its concentration gradient.
How does diffusion work in perfume?
Yes it is
What process permits absorption of glucose into cells?
The process that permits absorption of glucose into cells is called facilitated diffusion. Glucose is transported across cell membranes with the help of glucose transport proteins, such as GLUT-1 and GLUT-4. These proteins allow glucose to move down its concentration gradient and into the cells where it can be used for energy production.
What are the consequences for a cell if it cannot carryout osmosis and diffusion effectively?
The cell will work but not very well because osmosis and diffusion did not occur but sometimes it will work anyways
In facilitated diffusion which process does not require energy?
Simple and facilitated diffusion are a part of passive transport. This refers to the movement of molecules, atoms and ions across the cell membrane. In both of these processes, molecules move from areas of high concentration to areas of lower concentration because equilibrium is trying to be maintained in living organisms. Simple diffusion just happens randomly and without any aides. Facilitated diffusion uses proteins in the cell membrane to guide polar molecules and ions in and out of the membrane (always to areas of lower concentration) and DOES NOT require ENERGY.Only active diffusion requires energy.
What is one example of a substance using faciliated transport?
fatty acids membranes
