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How does facilitated diffusion work?
It is a passive process utilizing a protein carrier or channel.
Do aquaporins participate in active transport in a cell?
No, aquaporin's do not need a living cell in order to function. Aquaporin's are water channels that permit water channels to cross membranes.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
What channels does water cross plasma membranes?
Aquaporins.
What is the function of protein channels?
Channel proteins take specific substances across cell membranes. Molecules passing through the membrane by channel protein is called mediated transport. To transport the substances, the channel protein must be embedded in the total cell membrane.
How are proteins used in biological membranes?
there are protein channels in the membranes and it regulate the entry of the molecules of different size.
What are the 2 types of diffusion and explain fully?
simple and fascillitated simple--> doesn't need help from protein channels on cell membranes
What kind of substances do protein channels allow to cross membranes?
Ions and large molecules
What is facillitated diffusion?
Facilitated diffusion is, the movement of specific molecules across cell membranes through protein channels
How does facilitated diffusion work?
It is a passive process utilizing a protein carrier or channel.
Do aquaporins participate in active transport in a cell?
No, aquaporin's do not need a living cell in order to function. Aquaporin's are water channels that permit water channels to cross membranes.
Water crosses plasma membranes through specialized channels?
Water crosses plasma membranes through specialized channels called diffusion and concentrated gradient.
What is the cell membranes channels and pumps made of?
Proteins.
What channels does water cross plasma membranes?
Aquaporins.
Protein channels that are sensitive to electricity are known as WHAT channels?
Voltage Gated channels
What kinds of substances do the protein channels allowed to cross membranes?
The protein channels (or carrier) allow substances that would not normally go through. These are larger molecules or ions.There are two kinds of transport protein:Channel Proteins which form a water-filled pore or channel in the membrane. This allows charged substances (usually ions) to diffuse across membranes. Most channels can be gated (opened or closed), allowing the cell to control the entry and exit of ions.Carrier Proteins which have a binding site for a specific solute and constantly flip between two states so that the site is alternately open to opposite sides of the membrane. The substance will bind on the side where it at a high concentration and be released where it is at a low concentration.
The passive form of a carrier protein is called?
Protein channels.
