Membranat

Membranat is a term used in biology to describe structures, tissues, or substances that are bounded by a membrane or consist of membrane-bound components. In this sense, membranat generally refers to entities that are enclosed by or composed of phospholipid bilayers with embedded proteins, forming distinct compartments and regulating transport and signaling.

Membranes create separations within cells and between cells, enabling compartmentalization essential for metabolism and communication. Membranösa organeller include the nucleus (surrounded by a nuclear envelope), mitochondria, chloroplasts, endoplasmic reticulum and Golgi apparatus. Other membranous structures are vesicles and vacuoles. In multicellular organisms, serous and mucous membranes line cavities and surfaces, providing protection and selective barriers.

In contrast, some cellular components are non-membranous, such as ribosomes, centrioles and the cytoskeleton. These lack surrounding lipid membranes and have different roles in protein synthesis and structural support.

Usage and context: membranat is commonly used in Swedish biology to describe features that are membrane-bound or membrane-associated. The term emphasizes the presence and importance of membranes in the organization and function of cells and tissues. ItsRelated concepts include the overall membranous system of a cell, the endomembrane system, and principles of membrane permeability and transport.

See also: membrane, membranous, organelle, endomembrane system.