An interesting example of a chemical sensor (that is actually a microsystem on its own) has been presented recently [28]. The device is a microfabricated surface plasmon sensor that integrates optical, mechanical and electronic components. The sensor contains elements that are common to numerous ele...
It is now established that membranes participate in various dynamic functions of a cell, for example homeostasis, cell-cell communication, cell division, cellular defense, etc. Although we know a lot about the structure of the cell membrane, we have some crucial voids in our knowledge of its ...
A membrane of the diaphragm pump and a pump constituting an applicationTAVERNON CLAUDE
The pump mechanism that maintains the resting membrane potential is an example of ___. Membrane Transport The plasma membrane surrounds the cytoplasmic contents of a cell and controls the exchange of materials with the extracellular environment. The material exchange mechanis...
Cells communicate with each other through secreting and releasing proteins and vesicles. Many cells can migrate. In this study, we report the discovery of migracytosis, a cell migration-dependent mechanism for releasing cellular contents, and migrasomes,
Differences in oral microflora have been observed between individuals with healthy teeth and those with dental caries. For example, the findings of a study on the oral microbiome of children indicate that the generaRothia,Neisseria, andHaemophilus, which are among the first colonizers of the oral ...
Heart The heart acts as a pump and maintains circulation of the blood by alternate concentration and relaxation of cardiac muscle (the myocardium). It generally contracts at
of the H+-pump activity in this membrane preparation is derived from the plasma membrane and that the properties of this plasma membrane H+-pump are similar to those of the vacuolar (V-type) H+-pumps described in various intracellular organelles and in the plasma membrane of other cell ...
The bioelectrical potential here is shown as a hyperpolarization for clarity; it is as likely to instead be a depolarization event. 1.1 Ion flux during development Studies of ion and voltage gradients have revealed a regulatory role for membrane potential in cell cycle control. For example, ...
Cells and cellular organelles are delineated by membranes that consist of a bilayer of phospholipids, sphingolipids, glycolipids, and imbedded sterols, as well as numerous integral and peripheral proteins that fulfill specific functions in the membrane. These membranes segregate cell internal constituents ...