Membrane

A membrane is a thin soft layer of material. A membrane separates two things. In biology a membrane can mean two things: a tissue membrane or the membranes...

cell membrane is a thin flexible layer around the cells of all living things. It is sometimes called the plasma membrane or cytoplasmic membrane. Its...

A mucous membrane (or mucosae; singular mucosa) is a skin-like lining. A mucus membrane is covered in epithelium. They secrete mucus, and in the alimentary...

The nuclear membrane (or nuclear envelope) is the membrane inside a cell around the nucleus. It has the genetic material (chromosomes and DNA) and the...

The tympanic membrane, also called an eardrum, is a thin membrane that separates the external ear from the middle ear in humans and other animals. It moves...

A membrane protein is a protein molecule that is attached to, or associated with the membrane of a cell or an organelle. 20–30% of all genes in genomes...

(/ɒzˈmoʊ.sɪs/) is the movement of solvent (liquid) molecules through a membrane, from one solution to another, which happens without an outside force....

controls the cell's growth and reproduction. It has a double layered nuclear membrane round it. The nucleus is usually the most prominent organelle in a cell...

as anti-glomerular basement membrane disease, is a rare autoimmune disease in which antibodies attack the basement membrane in lungs and kidneys. This...

biology, a receptor is a special structure that can be found in cell membranes. These are made of protein molecules such as glycoproteins. Receptors...

The Hen's egg test on chorioallantoic membrane, or hen's egg test is a test that can be used to test the toxicity of substances. It is also often used...

part of a cell that does a specific job. Organelles usually have a plasma membrane around them. Most of the cell's organelles are in the cytoplasm. The name...

small membrane-enclosed sac that stores or transports substances in a cell. Vesicles form naturally because of the properties of lipid membranes. Vesicles...

stimulus. When a neuron is not conduction or is in resting state the axonal membrane is more permeable to K+ ions and impermeable to Na+ ions. The sodium potassium...

be mucous membranes like the surface of the stomach or inside the mouth. Ulcers start when the top layer (surface) of skin or mucous membrane is damaged...

increasingly surfactant deficiency disorder (SDD), and previously called hyaline membrane disease (HMD), is a syndrome in premature infants caused by developmental...

the membrane potential that would be maintained if there were no action potentials, synaptic potentials, or other active changes in the membrane potential...

rigid layer that surrounds some types of cells. It is outside the cell membrane and gives these cells support and protection, as well as acting as a filter...

membrane. The envelope is got by the capsid from an intracellular membrane in the virus' host; such as the inner nuclear membrane, the golgi membrane...

be up to 10 times bigger. Eukaryote cells have many different internal membranes and structures, called organelles. They also have a cytoskeleton. The...