Like the exterior walls of a house, the plasma membrane is semi-permeable ... products result. For example, when oxygen levels are low, skeletal muscle cells rely on glycolysis to meet their ...

and is one of the ways substances can move across the cell membrane, into or out of the cell. Products of digestion, dissolved in water, can pass across the wall of the small intestine by diffusion.

For example, prokaryotic organisms have sensors ... molecules are either too big or too charged to cross a cell's plasma membrane (Figure 1). Not all receptors exist on the exterior of the cell.

Size Most are 5 μm - 100 μm. Most are 0.2 μm - 2.0 μm. Outer layers of cell Cell membrane, surrounded by cell wall in plants and fungi. Cell membrane, surrounded by cell wall. Cell contents ...

For example, they facilitate nutrient absorption ... "These changes make the apical membrane—the top of the cell—less stiff and certain constituents of the tight junctions more mobile, without ...

PSMA is a dimeric type II integral membrane glycoprotein, highly expressed on prostate cancer cells. It has been shown to be a predictor for prostate cancer progression and for prognosis of prostate ...