The assimilation of carbon into living organisms by photosynthesis.

destruction of the biological activity of an enzyme, virus, etc., by light.

= photoaction n.

The phenomenon whereby exposure of living material to visible light can counteract damage to genetic material caused by previous ultraviolet…

a molecular reaction caused by light; = photoact n.

Reversal of a (biological) process by the action of light.

capacity for photoreactivation.

The property of being photoreversible; an instance of this.

Protection against the harmful effects of (esp. ultraviolet) light; spec. the phenomenon whereby exposure to visible light can protect living…

= photoreactivation, n.