CHEMOTAXIS NOTES
CHEMOTAXIS NOTES Chemotaxis refers to the movement of cells or organisms in response to chemical gradients in their environment. This phenomenon is particularly observed in bacteria, immune cells, and other single-celled organisms. Here are some key points about chemotaxis: Definition: Chemotaxis is the directed movement of cells or organisms in response to chemical signals. Cells can move either towards (positive chemotaxis) or away from (negative chemotaxis) the source of the chemical gradient. Types of Chemotaxis: Positive Chemotaxis: Movement towards a higher concentration of a chemical. Negative Chemotaxis: Movement away from a higher concentration of a chemical. Chemotactic Agents: Cells respond to various chemical cues, including nutrients, toxins, or signaling molecules. Common chemotactic agents include amino acids, sugars, and other small molecules. Mechanisms of Chemotaxis: Sensory Receptors: Cells possess receptors that can detect changes in the concentration of specif