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What does a channel protein do in the context of cellular transport?
A channel protein helps facilitate the passage of specific molecules or ions across a cell membrane, allowing for efficient and selective transport in and out of the cell.
What role do peripheral proteins play in the transport of molecules across the cell membrane, particularly in the context of transport proteins?
Peripheral proteins play a crucial role in assisting transport proteins in moving molecules across the cell membrane. They help in the recognition and binding of specific molecules, as well as in the regulation of transport protein activity. This collaboration ensures efficient and selective transport of substances in and out of the cell.
What id the difference between active and passive transport?
Active transport requires energy to move molecules against their concentration gradient while passive transport does not require energy and moves molecules from high to low concentration. Active transport is selective and can transport specific molecules, while passive transport is nonselective and moves molecules based on their concentration gradient.
Differences between diffusion and active transport?
Diffusion is the passive movement of molecules from an area of high concentration to an area of low concentration, while active transport requires energy to move molecules against their concentration gradient, from an area of low concentration to an area of high concentration. Active transport is selective, meaning it can move specific molecules, whereas diffusion is non-selective.
Why is the membrane impermeable to protons?
The membrane is impermeable to protons because it contains specific proteins called proton pumps that actively transport protons across the membrane. This selective transport mechanism helps maintain the balance of protons inside and outside the cell, which is crucial for various cellular processes.
What is the definition of selective transport?
selective transport is the transport of specific substances by means of protein channels and pumps.
Passive transport includes?
Is also called selective permeability
What is the function of the nuclear membrance?
it helps in selective transport of molecules between nucleus and cytoplasm
What has the author Peter Shapiro written?
Peter Shapiro has written: 'Selective transport of variously shaped aluminum tracers in an ephemeral stream' -- subject(s): Sediment transport
What does a channel protein do in the context of cellular transport?
A channel protein helps facilitate the passage of specific molecules or ions across a cell membrane, allowing for efficient and selective transport in and out of the cell.
What does epithelial tissue do in the stomach?
The main function of it in the stomach is to secret,selective absorption,protection, trans cellular transport and detection of sensation .
What role do peripheral proteins play in the transport of molecules across the cell membrane, particularly in the context of transport proteins?
Peripheral proteins play a crucial role in assisting transport proteins in moving molecules across the cell membrane. They help in the recognition and binding of specific molecules, as well as in the regulation of transport protein activity. This collaboration ensures efficient and selective transport of substances in and out of the cell.
What are the similarities between facillitated transport and active transport?
Both facilitated transport and active transport involve the movement of molecules across a cell membrane with the help of carrier proteins. However, facilitated transport does not require energy input from the cell, while active transport does require energy in the form of ATP. Both processes are specific and selective in what molecules they transport across the membrane.
What id the difference between active and passive transport?
Active transport requires energy to move molecules against their concentration gradient while passive transport does not require energy and moves molecules from high to low concentration. Active transport is selective and can transport specific molecules, while passive transport is nonselective and moves molecules based on their concentration gradient.
What is the breeding of organisms that have a certain desire trait?
Selective breeding.
How the proximal convuluted tubule are adapted for selective reabsorption?
The proximal convoluted tubule is adapted for selective reabsorption through the presence of microvilli on the epithelial cells that increase surface area for reabsorption. It also has numerous mitochondria to provide energy for active transport of substances. Additionally, there are specific carrier proteins embedded in the cell membrane that facilitate the reabsorption of essential solutes such as glucose, amino acids, and ions.
In what way is a cell membrane selective?
very complicated question that is better addressed by a cell biology text but in general cell membrane itself is non-polar and allows small non-polar molecules through it also has protein that are built to selectively let in molecule based on commands from the body
