Examlex
Diffusion occurs against concentration gradients.
External Stimuli
Environmental factors or inputs that affect the senses and can influence behavior, reactions, and internal physiological states of an individual.
Internal Stimuli
Signals or events that originate within an organism, triggering psychological or physiological responses.
Consciousness
The state of being aware of and able to think about one's own existence, sensations, thoughts, and environment.
Circadian Rhythm
The biological clock that cycles daily, regulating physiological and behavioral processes such as sleep-wake patterns and hormone release.
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