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Did NaCl require a transport protein?
Did NaCl require a transport protein for diffusion?
Does active transport require a membrane?
Yes, active transport requires a membrane because it involves the movement of molecules or ions against their concentration gradient, which requires energy expenditure. This process is facilitated by specific transport proteins embedded within the membrane.
Why does NaCl not require a transport protein for diffusion?
NaCl can diffuse freely across cell membranes through ion channels or transporters that allow for passive movement down its concentration gradient. As a small and simple molecule, NaCl does not require a specific transport protein for diffusion like larger or more complex molecules.
Does facilitated diffusion require a transport protein for the movement of molecules across the cell membrane?
Yes, facilitated diffusion does require a transport protein for the movement of molecules across the cell membrane.
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.
How do ions diffuse across cell membranes?
Ions diffuse across cell membranes through protein channels or transporters that allow them to move from areas of high concentration to areas of low concentration. This process is known as passive transport and does not require energy from the cell.
Do ions need a transport protein to enter bilayer?
Yes! K+ or Na+ or exchanged with its specific potassium and sodium pump protein on the membrane.
Is facilitated diffusion type of active transport?
Facilitated diffusion is passive transport as no energy is used, and a protein channel is all that's required. After that it is simple diffusion down a concentration gradient. Anything with the word diffusion in it is passive transport. Diffusion is just the principle of passive transport.
What are the types of membrane transport across the cell membrane require a protein carrier?
The brain
How do ions get across the neuron membrane?
Ions can cross the neuron membrane through specific protein channels. These channels are selective, allowing only certain ions to pass through based on their size and charge. Additionally, ions can also be transported across the neuron membrane through active transport processes, which require energy in the form of ATP.
What are membrane structures that function in active transport?
Protein pumps, such as the sodium-potassium pump and the proton pump, are membrane structures that function in active transport by moving ions against their concentration gradients across the cell membrane. These pumps require energy, usually in the form of ATP, to transport substances.
What is the function of protein channels in the cell membrane?
transport
