For molecules undergoing diffusion within a limited area , the size of the domain in which diffusion is confined can be estimated by fitting the MSD–nτ plot with the following equation 5,23: ...

Researchers have identified a form of molecular motion that has not previously been observed. When what are known as "guest molecules"—molecules that are accommodated within a host molecule—penetrate ...

Bacteria and yeast need to prevent leakage of numerous small molecules through their cell membrane. Biochemists have studied how the composition of the membrane affects passive diffusion and the ...

Learn how molecules move through membranes by passive diffusion, active transport and osmosis. BBC Bitesize Scotland SQA National 5 Biology revision.

These immobilized transmembrane proteins effectively function as rows of pickets against free diffusion of molecules in the membrane (through steric hindrance) and to increased packing near the ...

The new membrane can withstand temperatures up to 284 F (140 C) and pressures up to 30 atmospheres when exposed to organic solvents. These attributes are key because they allow the membrane to ...

Secrets of a cellular nanomachine revealed: Learning how any molecule passes through any membrane Mitochondria are often referred to as the powerhouses of our cells, because they generate chemical ...

Learn how molecules move through membranes by passive diffusion, active transport and osmosis. BBC Bitesize Scotland SQA National 5 Biology revision.

Guest molecules slice through droplets of DNA polymers in a frontal wave, providing a foundation for better understanding ...

The new membrane can withstand temperatures up to 284 F (140 C) and pressures up to 30 atmospheres when exposed to organic solvents. These attributes are key because they allow the membrane to ...

Aleksandra Radenovic, head of the Laboratory of Nanoscale Biology in the School of Engineering, has worked for years to improve nanopore technology, which involves passing a molecule like DNA ...