Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Kinesis is a non-directional response where an organism's speed or activity level changes due to changes in their environment but not necessarily toward or away from any specific stimuli.
Related terms
Orthokinesis: The speed of movement of the individual is dependent upon the intensity of the stimulus.
Klinokinesis: The frequency or rate of turning is proportional to stimulus intensity.
Tropism: A biological phenomenon indicating growth or turning movement of a biological organism in response to an environmental stimulus.