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Response definition. response to a stimuli to increase organism's chance of survival eg. moving away from harmful stimuli like predators. Greater survival = greater chance of survival and passing alleles to next generation. this is therefore a selection pressure favouring organism with more appropriate responses. Selection pressure definition.
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Response to stimuli refers to the ability of living organisms to detect and react to changes in their environment. This fundamental characteristic demonstrates how organisms interact with their surroundings, ensuring survival by adapting to various external conditions.
Questions and model answers on 6.1 Response to Stimuli (A Level only) for the AQA A Level Biology syllabus, written by the Biology experts at Save My Exams.
Definition. Cellular responses to stimuli refer to the mechanisms by which cells detect and react to changes in their environment, allowing them to adapt and maintain homeostasis. These responses can involve various processes, such as signal transduction, gene expression changes, and alterations in cellular behavior.
Nervous System: Response to a Stimulus. The nervous system enables the body to detect changes in the environment and brings about appropriate responses to ensure its safety. Receptor cells detect changes in the environment, or stimuli. Nerve impulses travel from the receptor cells along sensory neurones to the central nervous system, or CNS.
