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Health, 25.09.2019 03:30, gandalfhan

What two layers make it difficult for materials to pass through the cell membrane?

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Biology, 11.07.2019 14:30, liv467
Glucose, a small uncharged molecule, can pass through the cell membrane, but sodium ions do not pass through the membrane easily. what is the most accurate explanation for these findings? 1) cell membranes have carrier proteins for glucose but not for sodium.2) the cell membrane is semi-permeable.3) the membrane potential makes it difficult for sodium ions to diffuse across the membrane.4) the sodium-potassium pump keeps sodium inside the cell.
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Biology, 11.07.2019 17:50, belindajolete
What is one difference between a cell wall and a cell membrane? 1) cell walls have gap junctions. cell membranes have plasmodesmata. 2) cell walls act as a boundary that nothing can pass through. cell membranes allow materials in and out of the cell. 3) cell walls are found inside the cell membrane. the cell membrane is the outermost structure of a cell. 4) cell walls are made of cellulose. cell membranes are made of proteins and phospholipids.
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Chemistry, 27.07.2019 08:40, angie249
What is one difference between a cell wall and a cell membrane? a. call wall have gap junctions.cell membrane have plasmondesmata b. cell walls act as a boundary that nothing can pass through. cell membrane allow materials in and out of cell. c. cell walls are found inside the cell membrane. the cell membrane is the outermost structure of a cell. d. cell walls are made of cellulose. cell membrane are made of protein and phospholipids
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Biology, 04.08.2019 04:20, 214578
What is one difference between a cell wall and a cell membrane a. cell walls have gap junctions. cell membranes have plasmodesmata b. cell walls act as a boundary that nothing can pass through. cell membranes allow materials in and out of the cell c. cell walls are found inside the cell membrane. the cell membrane is the outermost structure of a cell d. cell walls are made of cellulose. cell membranes are made of proteins and phospholipidsasap subject is science
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