Race Omaha is a non-profit 501c3 organization whose mission is to provide opportunities for all ages and abilities to participate in events that promote active and healthy lifestyles. All of our events are sanctioned by the USA Triathlon. The USAT is the sanctioning authority for more than 4,300 events across the nation.
1 Redox reactions may involve the transfer of electrons between chemical species. 2  The reaction that occurs when In which I 2 is reduced to I-and S 2 O 3 2- (thiosulfate anion) is oxidized to S 4 O 6 2- provides an example of a redox reaction :
Light and dark reactions in photosynthesis Photosynthesis is divided into two parts: 1. Light-dependent reactions (light reactions) 2. Light-independent reactions (dark reactions). Light reactions need light to produce organic energy molecules (ATP and NADPH). They are initiated by colored pigments, mainly green colored chlorophylls.