Posts Tagged ‘molecules’

Sensory receptor cells

Posted on December 3rd, 2009 by receptor  |  No Comments »

The sensitivity of the antennae is astounding. The energy of a single photon, the most minute amount of light, is sufficient to stimulate the visual cell. The olfactory cells sense a single molecule of odoriferous substance. For the auditory cell to be excited, it is sufficient for the ear-drum to vi­brate with an amplitude of […]

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