Thus, the other chlorophylls in the photosystem and antenna pigment proteins all cooperatively absorb and funnel light energy to the reaction center. Besides chlorophyll a, there are other pigments, called accessory pigments, which occur in these pigmentâprotein antenna complexes.
Freebase(0.00 / 0 votes)Rate this definition: GLAD. GLAD is one of the pioneers of Christian pop/rock and a cappella music, having formed as a progressive rock group in 1972 and discovered a large audience for their a cappella music in 1988. Today, with over 1.5 million albums sold, they continue to perform concerts and release occasional recordings.
Trivia. 1  The voice of GLaDOS is performed by Ellen McLain, she is the only voice actor to be featured in all three of the games that were first released as part of The Orange Box. 2  In addition to GLaDOS she also voices the Turrets in Portal, the Combine Overwatch in Half-Life and The Announcer in Team Fortress 2.