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Chemotaxis is the phenomenon whereby somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (for example, glucose) by swimming towards the highest concentration of food molecules, or to flee from poisons ...
Chemotaxis (from chemo- + taxis) is the movement of an organism or entity in response to a chemical stimulus. [1] Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment.
Chemotaxis is the directed migration of a cell toward a chemoattractant along a concentration gradient. The ability of neutrophils to undergo chemotaxis implies the possession of a sensory mechanism that must be linked to the locomotor apparatus of the cell.
Chemical cues can signal the presence of food, a mate, a competitor, a predator, or a hazard. Thus, chemotaxis — defined as movement toward (or away from) a source of chemical cues — is central to the ecology of most animals. However, chemotaxis is not a purely olfactory behavior.
Chemotaxis is the reorientation of motility in response to a chemical gradient. Sperm chemotaxis toward factors derived from eggs or from the female reproductive tract has been observed in marine species, amphibians and possibly in mammals (11, 40).
Chemotaxis is the phenomenon in which the direction of a cell's locomotion is determined by an extracellular gradient of chemicals. The first recorded observations of chemotaxis were made in 1888 by Leber, who found that leukocytes converge from all directions along straight paths to sites of rabbit corneal irritation [1,2].
May 14, 2021 · Chemotaxis, or migration towards diffusible chemical cues, has been studied for more than a century, but information is just now beginning to emerge about how cells respond to other cues, such as...
Jan 1, 2005 · Chemotaxis is a fascinating biological process, through which a cell migrates along a shallow chemoattractant gradient that is less than 5% difference between the anterior and posterior of the...
Aug 8, 2008 · Chemotaxis is a fundamental process in which cells migrate directionally when they are exposed to external chemical gradients. It is exhibited by a wide variety of cell types and involves distinct strategies that depend on the environmental conditions.
Jan 1, 2022 · Chemotaxis can either be positive or negative depending on the direction of motion of the cell in response to the chemical signals. If the cell moves towards the direction of the signal, it is termed as positive chemotaxis and the chemical signal is then considered as chemoattractant.
