In this diagram of G-protein-coupled receptor activation ... These activated subunits can act on ion channels in the cell membrane, as well as cellular enzymes and second messenger molecules ...

Living cells and tissues show a high capacity to absorb various chemical compounds from the surrounding environment. Although ...

Mitochondrial genome contributes polypeptide subunits to the five enzyme complexes that comprise the oxidative phosphorylation (OXPHOS) system within the inner mitochondrial membrane, the site of ...

This takes place when molecules diffuse across the cell membrane by travelling through ... by the breakdown of ATP inside the cell. This diagram shows molecules moving from area of low ...

The so-called T-tubule network within the cells, which consists of electrically excitable membrane tubes that are ...

For example, the long, narrow muscle cell is ... is a nucleus -- a sphere-like structure separated from the rest of the cell by a membrane. The nucleus acts as the cell's control center ...

A virus budding from a host cell membrane. This sequence of steps forms ... and how the virus is released from an organism (for example, through sneeze droplets or bodily fluids).

The lipid nanoparticles that caused an immune response interacted with the cell membrane without disrupting ... to the brain ...

See COCHLEA for diagram. Incoming vibrations set up a travelling wave along the membrane giving it a different maximum displacement for different frequencies as shown below. The bulging of the ...

The slideshow shows an example of osmosis showing the direction of movement of water between two different concentrations of sugar solutions. In pure water, the cell contents (the cytoplasm and ...

Human cells, for example, employ hundreds of different types ... which provides the basic structure for the cell membrane, and a non-bilayer-forming lipid, such as cholesterol, which adds ...