Search results
Results From The WOW.Com Content Network
Pellicle (biology), a thin layer supporting the cell membrane in various protozoa; Pellicle mirror, a thin plastic membrane which may be used as a beam splitter or protective cover in optical systems; Pellicle (dental), the thin layer of salivary glycoproteins deposited on the teeth of many species through normal biologic processes
The dental pellicle, or acquired pellicle, is a protein film that forms on the surface enamel, dentin, artificial crowns, and bridges by selective binding of glycoproteins from saliva that prevents continuous deposition of salivary calcium phosphate. It forms in seconds after a tooth is cleaned, or after chewing.
The anal pore or cytoproct is a structure in various single-celled eukaryotes where waste is ejected after the nutrients from food have been absorbed into the cytoplasm. [1]In ciliates, the anal pore (cytopyge) and cytostome are the only regions of the pellicle that are not covered by ridges, cilia or rigid covering.
Spiral pellicle strips. Euglena lacks a cell wall. Instead, it has a pellicle made up of a protein layer supported by a substructure of microtubules, arranged in strips spiraling around the cell. The action of these pellicle strips sliding over one another, known as metaboly, gives Euglena its exceptional flexibility and contractility. [19]
The pellicle gives shape to the cell, especially during locomotion. Pellicles of protozoan organisms vary from flexible and elastic to fairly rigid. In ciliates and Apicomplexa, the pellicle includes a layer of closely packed vesicles called alveoli. In euglenids, the pellicle is formed from protein strips arranged spirally along the length of ...
Euglenoids are distinguished mainly by the presence of a type of cell covering called a pellicle. Within its taxon, the pellicle is one of the euglenoids' most diverse morphological features. [7] The pellicle is composed of proteinaceous strips underneath the cell membrane, supported by dorsal and ventral microtubules. This varies from rigid to ...
The pellicle is not smooth, but textured with hexagonal or rectangular depressions. Each of these polygons is perforated by a central aperture through which a single cilium projects. Between the alveolar sacs of the pellicle, most species of Paramecium have closely spaced spindle-shaped trichocysts , explosive organelles that discharge thin ...
A pellicle is a skin or coating of proteins or cellulose on the surface of meat (e.g. smoked salmon) or fermented beverages (e.g. Kombucha). Pellicles of protein that form prior to smoking meat (including fish and poultry ) allow smoke to better adhere to the surface of the meat during the smoking process.