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Pinocytosis. In cellular biology, pinocytosis, otherwise known as fluid endocytosis and bulk-phase pinocytosis, is a mode of endocytosis in which small molecules dissolved in extracellular fluid are brought into the cell through an invagination of the cell membrane, resulting in their containment within a small vesicle inside the cell.
Brooker's merocyanine (1-methyl-4-[(oxocyclohexadienylidene)ethylidene]-1,4-dihydropyridine, MOED) [1] is an organic dye belonging to the class of merocyanines. MOED is notable for its solvatochromic properties, meaning it changes color depending on the solvent in which it is dissolved.
Blood cells in solutions with different osmotic pressure. Cytolysis would result in the image on the far right. Micrographs of osmotic pressure on red blood cells A human white blood cell (upper right) in water swells until it bursts (at ~14 seconds)
Typically the final effect consists in the activation of an ion channel (ligand-gated ion channel) or the initiation of a second messenger system cascade that propagates the signal through the cell. Second messenger systems can amplify or modulate a signal, in which activation of a few receptors results in multiple secondary messengers being ...
Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers. (Intercellular signals, a non-local form of cell signaling , encompassing both first messengers and second messengers, are classified as autocrine , juxtacrine , paracrine , and ...
Published online in the Image & Video Library of The American Society for Cell Biology; The Image & Video Library Archived 2011-06-10 at the Wayback Machine of The American Society for Cell Biology contains many videos showing the cell division. The Cell Division of the Cell Image Library; Images : Calanthe discolor Lindl. – Flavon's Secret ...
Biological thermodynamics (Thermodynamics of biological systems) is a science that explains the nature and general laws of thermodynamic processes occurring in living organisms as nonequilibrium thermodynamic systems that convert the energy of the Sun and food into other types of energy.
In the field of molecular biology, the cAMP-dependent pathway, also known as the adenylyl cyclase pathway, is a G protein-coupled receptor-triggered signaling cascade used in cell communication. [ 1 ]