Photorespiration. In C4 plants the photosynthesis takes place in a chloroplast of a thin-walled mesophyll cell and a 4- carbon acid is handed off to a thick-walled bundle sheath cell where the Calvin cycle occurs in a chloroplast of that second cell. C3 photosynthesis produces a three-carbon compound via the Calvin cycle while C4 photosynthesis makes an intermediate four-carbon compound that splits into a three-carbon compound for the Calvin cycle. C4 photosynthesis. Both C3 and C4 plants require 6 molecules of CO2 and 12 molecules of water to synthesis one molecule of glucose. Both C3 and C4 plants fix energy from sunlight. CAM photosynthesis gathers sunlight during the day and fixes carbon dioxide molecules at night. C4 cycle is commonly known as Hatch and Slack pathway (in honor of Marshall Davidson Hatch and C. R. Slack who elucidated this pathway). Photorespiration is a wasteful pathway that competes with the Calvin cycle. The image above shows the C3 carbon fixation pathway also known as the Calvin Cycle, used my many types of plants. The first stable product formed in C3 cycle is a three carbon (3C) compound, hence the name. Figure 2: C4 Cycle 5/2 /20 17 Diffe rence Be tween C3 a nd C4 Cycle | Charact eristics, Proce ss, Fun ction Learn more: Difference between C3 and C4 Cycle C3 Plants: Plants which uses C3 cycle (Calvin cycle) of dark reaction of photosynthesis. C3 cycle is the first described dark reaction pathway. Photorespiration. Practice: Photorespiration. C3, C4, and CAM plants. In C3 plants the photosynthesis, carbon fixation and Calvin cycle all occur in a single chloroplast. The difference between C3 and C4 plants. It occurs in mesophyll and bundle sheath cell present in a chloroplast. C4 Plants The C4 process is also known as the Hatch-Slack pathway and is named for the 4-carbon intermediate molecules that are … C3 Cycle (Calvin Cycle) C4 Cycle (Hatch & Slack Pathway) 1: C3 cycle is commonly known as Calvin Cycle (Melvin Calvin described it first). However, two key restrictions slow down photosynthesis. ... Photorespiration: C3, C4, and CAM plants. Before Calvin or C3 cycle, some plants follow the C4 or Hatch and Slack pathway. ... the enzyme Rubisco fixes carbon into sugar through the Calvin-Benson cycle. Majority of the plants (~95%) on earth are C3 type. Photosynthesis is the process that plants use to turn light, carbon dioxide, and water into sugars that fuel plant growth, using the primary photosynthetic enzyme Rubisco. C3 photosynthesis uses the Calvin cycle only for carbon fixation catalyzed by Rubisco, inside the chloroplast in mesophyll cells. The key difference between C3 and C4 plants is that the C3 plants form a three-carbon compound as the first stable product of the dark reaction while the C4 plants form a four-carbon compound as the first stable product of the dark reaction.. Photosynthesis is a light-driven process that converts carbon dioxide and water into energy-rich sugars in plants, algae and … The global distribution of C3 and C4 plants is required for accurately simulating exchanges of CO2, water, and energy between the land surface and atmosphere. While C4 plants photosynthesis activities are divided between mesophyll and bundle sheath cells where carbon fixation is catalyzed by phosphoenolpyruvate carboxylase (PEPC). CAM plants. RuBP can accept CO2 in both C3 and C4 plants. This is the currently selected item. The carbohydrate product of both C3 and C4 cycle is a three-carbon sugar phosphate molecule known as Glyceraldehyde 3 phosphate (G3P). 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