What will happen to a cell that is placed in a solution containing a high concentration of sugar a molecule that cannot pass across the cell membrane?
Osmosis (/ ɒ z ˈ m oʊ. s ɪ s /) is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration in the direction that tends to equalize the solute concentrations on the two sides. It may also be used to describe a physical process in which any solvent moves across a selectively permeable membrane (permeable to the ...
The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells. The cell membranes of almost all organisms and many viruses are made of a lipid bilayer as are the nuclear membrane surrounding the cell nucleus and membranes of the membrane-bound organelles in the cell. The lipid bilayer is the barrier that keeps ions proteinsand other molecules where they are needed and prevents them from diff…
Tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a semipermeable cell membrane . In other words tonicity is the relative concentration of solutes dissolved in solution which determine the direction and extent of diffusion.It is commonly used when describing the response of cells immersed in an external solution .
Membrane potential - Wikipedia
Tonicity - Wikipedia
Tue Nov 05 2002 13:30:00 GMT-0500 (Eastern Standard Time) · Primary active transport also called direct active transport directly uses metabolic energy to transport molecules across a membrane . Substances that are transported across the cell membrane by primary active transport include metal ions such as Na + K + Mg 2+ and Ca 2+.These charged particles require ion pumps or ion channels to cross membranes and distribute through the …
The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space) whic...
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