Examlex
At night, plants cannot run metabolic pathways because there is no sunlight.
Signal
A form of communication or indicator that carries information or instructions, often causing a response in the receiver.
Transduction
The conversion of one form of energy into another, such as transforming physical stimuli into neural signals in sensory systems.
Neural Impulse
The electrical signal that travels along the nerve cells, facilitating communication within the nervous system.
Physical Stimulus
Any external factor that can provoke a physical response or reaction from a biological organism.
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