BIOLOGY 151 Chapter Notes - Chapter 8: Light-Independent Reactions, Triose, Thylakoid
Document Summary
8. 1 photosynthesis is the major pathway by which energy and carbon are incorporated into carbohydrates. In photosynthesis, water is oxidized, releasing oxygen, and carbon dioxide is reduced, forming carbohydrates. Photosynthesis consists of two sets of reactions: (1) the calvin cycle, in which carbon dioxide is reduced to form carbohydrates, and (2) light-harvesting reactions, in which atp and nadph are generated to drive the calvin cycle. In eukaryotes, photosynthesis takes place in chloroplasts: the calvin cycle takes place in the stroma, and the light-harvesting reactions take place in the thylakoid membrane. 8. 2 the calvin cycle is a three-step process that uses carbon dioxide to synthesize carbohydrates. The three steps of the calvin cycle are (1) addition of. The first step is the addition of co2 to the 5 carbon sugar rubp. This step is catalyzed by the enzyme rubisco, considered the most abundant protein on earth. The resulting 6-carbon compound immediately breaks down into two 3-carbon compounds.