Sensor - Sensors in Nature

Sensors in Nature

Further information: Sense

All living organisms contain biological sensors with functions similar to those of the mechanical devices described. Most of these are specialized cells that are sensitive to:

  • Light, motion, temperature, magnetic fields, gravity, humidity, moisture, vibration, pressure, electrical fields, sound, and other physical aspects of the external environment
  • Physical aspects of the internal environment, such as stretch, motion of the organism, and position of appendages (proprioception)
  • Environmental molecules, including toxins, nutrients, and pheromones
  • Estimation of biomolecules interaction and some kinetics parameters
  • Internal metabolic milieu, such as glucose level, oxygen level, or osmolality
  • Internal signal molecules, such as hormones, neurotransmitters, and cytokines
  • Differences between proteins of the organism itself and of the environment or alien creatures.

Read more about this topic:  Sensor

Famous quotes containing the word nature:

    “What art can paint or gild any object in afterlife with the glow which Nature gives to the first baubles of childhood. St. Peter’s cannot have the magical power over us that the red and gold covers of our first picture-book possessed. How the imagination cleaves to the warm glories of that tinsel even now! What entertainments make every day bright and short for the fine freshman!”
    —Ralph Waldo Emerson (1803–1882)