From stimulus to response
From stimulus to response
Living organisms detect stimuli using receptors and then coordinate responses. Animals often use rapid electrical signalling, while plants often use slower chemical control of growth.
From stimulus to response
From stimulus to response
Living organisms detect stimuli using receptors and then coordinate responses. Animals often use rapid electrical signalling, while plants often use slower chemical control of growth.
Step-by-step lessons covering Edexcel A A Level Biology Receptors, vision and plant responses for A Level Biology. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.