Thermal motion promotes lateral position exchanges between lipid molecules within a monolayer. In an artificial bilayer, this movement has been estimated to be ~2 ?m/second. This represents the entire length of a bacterial cell
Do you expect the lateral movement of a lipid molecule within a biological membrane to be equally fast? Explain your answer.
No. Although the rate of movement may be similar, it will most likely be slower in a biological membrane. An artificial bilayer is primarily phospholipids. Biological membranes contain a large number of protein components and specialized membrane domains that could limit the rate of lateral diffusion.
You might also like to view...
The total biomass in an ecosystem at any one point in time is the
A. standing crop. B. gross primary production. C. net primary production. D. None of these choices are correct. E. pyramid of energy.
Atrazine is used as a(an)
a. pesticide. b. fertilizer. c. herbicide. d. substitute for PCBs. e. insect repellent
RNA can be used as a template for the
production of DNA through the action of a. DNA polymerase. b. RNA polymerase. c. reverse transcriptase. d. ligase. e. restriction endonuclease
In his experiments, Griffith found that transformation occurs naturally in bacteria. Explain how Griffith found this out.
What will be an ideal response?