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Short "hint"

n. - Either of two yellow to red pigments of the eye membrane formed from rhodopsin by the action of light.

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Usage examples (7)
  • Nevertheless in that period, after dissecting retinas from 300 frogs, he found that rhodopsin on stimulation with light yielded both the protein opsin and a compound he called...
  • retinene can exist in two forms, different in molecular shape, called cis-retinene and trans-retinene.
  • In the dark, trans-retinene changes into cis-retinene and joins opsin once more to form the rhodopsin.
  • The shape of cis-retinene is such that it can combine with opsin to form rhodopsin, whereas trans-retinene cannot.
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