[Answer] Which of the following will pass through a cell membrane most easily?

Answer: small nonpolar molecules
Which of the following will pass through a cell membrane most easily?

Due to the cell membrane’s hydrophobic nature small electrically neutral molecules pass through the membrane more easily than charged large ones. The inability of charged molecules to pass through the cell membrane results in pH partition of substances throughout the …

Non-electrolytes substances that generally are hydrophobic and lipophilic usually pass through the membrane by dissolution in the lipid bilayer and therefore by passive diffusion. For those non-electrolytes whose transport through the membrane is mediated by a transport protein the ability to diffuse is generally dependent on the partition coefficient K .

Semipermeable membrane is a type of biological or synthetic polymeric membrane that will allow certain molecules or ions to pass through it by osmosis—or occasionally by more specialized processes of facilitated diffusion passive transport or active transport. [dubious – discuss] The rate of passage depends on the pressure concentration and temperature of the molecules or solutes on …

Smaller molecules (e.g. sugars and amino acids) and ions can easily pass through plasmodesmata by diffusion without the need for additional chemical energy. Larger molecules including proteins (for example green fluorescent protein) and RNA can also pass through the cytoplasmic sleeve diffusively.

Tue Jan 08 2002 13:30:00 GMT-0500 (Eastern Standard Time) · Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins. Being passive facilitated transport does n…

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