Usually proteins are the molecules doing the selection of what other molecules get into or out of a cell.
Proteins, specifically transmembrane integral proteins (they span the width of the membrane).
The chlorophyll pigment is located within the thylakoid membrane and the space between the thylakoid and the chloroplast membrane.
They are in thylakoid membranes.They are stored inside
Carrier proteins performs the diffusion of different molecules. They found as an integral protein in the cell membrane. When its specific binding partner molecule binds to it, the protein undergoes conformational change that allows the transport of the solute molecule inside the cell. Glucose transporter is one of the carrier proteins.
The advantage of membrane bound enzymes is that they are located near to their site of action. Quite a few membrane bound enzymes are signalling molecules which cluster together with other signalling molecules to ensure a quick response to stimuli. There are even some enzymes that are completely prevented from signalling if you remove them from the membrane.
The protein molecules in the cell membrane consist of adenine, 5 carbon sugars and three phosphate groups.
Phoso - means contains phosorous and lipids- is a collective term that means fats of oils. So its a layer of a liquidy faty oil containing phosorous. Phosolipids are located in the cell membrane and help cell diffusion. They are involved in facilitated diffusion accross the cell membrane.
chlorophyll molecules are located in the thylakoid membrane
I get no credit because this is straight from Wikipedia: "Flippases (rarely, flipases) are enzymes located in the membrane responsible for aiding the movement of phospholipid molecules between the two leaflets that compose a cell's membrane (transverse diffusion)."
Porins are proteins that are located in the outer membrane a bacteria. They function to form a water-filled pore through the membrane. The porin channel allows the diffusion of small hydrophilic (water-loving) molecules through to the periplasm.
Carrier proteins facilitates the transport of specific substances through intracellular compartments or across the cell membrane. They bond and then drag the molecules across the bilipid layer, releasing them on the opposite side.
The chlorophyll pigment is located within the thylakoid membrane and the space between the thylakoid and the chloroplast membrane.
They are in thylakoid membranes.They are stored inside
Carrier proteins performs the diffusion of different molecules. They found as an integral protein in the cell membrane. When its specific binding partner molecule binds to it, the protein undergoes conformational change that allows the transport of the solute molecule inside the cell. Glucose transporter is one of the carrier proteins.
The advantage of membrane bound enzymes is that they are located near to their site of action. Quite a few membrane bound enzymes are signalling molecules which cluster together with other signalling molecules to ensure a quick response to stimuli. There are even some enzymes that are completely prevented from signalling if you remove them from the membrane.
The protein molecules in the cell membrane consist of adenine, 5 carbon sugars and three phosphate groups.
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No. It is attached to the plasma membrane though, which is important. The cytoskeleton gives cells shape and rigidity etc and so it is important for it to be attached to the plasma membrane. The cytoskeleton is composed of molecules that are located in the cytoplasm but that are attached to the plasma membrane via specific proteins. Hope that helps!