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Diffusion is the movement of molecules from an area of higher concentration to one of lower concentration and typically does not require protein carriers or channels. However, facilitated diffusion, a specific type of diffusion, does involve protein carriers or channels to help transport molecules, such as ions or larger polar molecules, across the cell membrane. These proteins assist in moving substances that cannot easily pass through the lipid bilayer due to their size or polarity.
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What type of diffusion is specific and passive and becomes saturated if all of protein carriers are in use?
Facilitated diffusion is the specific and passive type of diffusion that becomes saturated when all protein carriers are in use. This occurs because facilitated diffusion relies on specific protein carriers to transport molecules across the cell membrane, and once all carriers are engaged, the rate of diffusion cannot increase further.
Why the line-with-gaps model is not suitable to explain facilitated diffusion?
Facilitated diffusion is a carrier-mediated form of transport across a membrane. The line-with-gaps model doesn't show the carrier proteins that are in the cell membrane. These proteins are what help facilitated diffusion occur.
What term defines the movement of materials along a concentration through protein channels?
Facilitated diffusion defines he movement of materials along a concentration gradient through protein channels.
What term defines the movement of material along a concentration gradient through protein channels?
Facilitated diffusion defines he movement of materials along a concentration gradient through protein channels.
What term defines the movement of materials along the concentration gradient through protein channels?
Facilitated diffusion defines he movement of materials along a concentration gradient through protein channels.
What type of diffusion is specific and passive and becomes saturated if all of protein carriers are in use?
Facilitated diffusion is the specific and passive type of diffusion that becomes saturated when all protein carriers are in use. This occurs because facilitated diffusion relies on specific protein carriers to transport molecules across the cell membrane, and once all carriers are engaged, the rate of diffusion cannot increase further.
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.
What are the 2 types of diffusion and explain fully?
The two types of diffusion are passive diffusion and facilitated diffusion. Passive diffusion is the movement of molecules across a membrane without the need for a protein carrier, driven by the concentration gradient. Facilitated diffusion involves the use of specific protein channels or carriers to help molecules move across the membrane, still following the concentration gradient without requiring energy.
What protein group includes carriers and channels?
Transport Proteins
How do the roles of protein molecules in diffusion differ and active transport?
Proteins are involved in passive diffusion as channels or carriers that facilitate the movement of molecules across a membrane based on concentration gradients. In active transport, proteins use energy to actively transport molecules against their concentration gradient, requiring ATP to drive the process.
How cell stop diffusion through protein channels?
by closing gates
Why the line-with-gaps model is not suitable to explain facilitated diffusion?
Facilitated diffusion is a carrier-mediated form of transport across a membrane. The line-with-gaps model doesn't show the carrier proteins that are in the cell membrane. These proteins are what help facilitated diffusion occur.
What is the difference between diffusion and facilitate diffusion?
The difference between diffusion and facilitated diffusion is that facilitated diffusion is that the molecules pass through special protein channels.
Which describes one of ways protein behave in facilitated diffusion?
they create channels
What are diffusions of particles through protein channels called?
Diffusion of particles through protein channels is called facilitated diffusion. This process allows specific molecules or ions to pass through the cell membrane with the help of transport proteins.
What is the difference between passive diffusion and facilitated diffusion?
Passive diffusion is the movement of molecules across a cell membrane from an area of high concentration to low concentration without the need for a protein carrier. Facilitated diffusion, on the other hand, requires the presence of specific protein channels or carriers to help molecules move across the membrane.
What form of transport is used by the cell membrane to speed up the intake of glucose?
Facilitated diffusion is the transport process used by the cell membrane to speed up the intake of glucose. This process involves the use of protein channels or carriers to help glucose molecules pass through the membrane.
