Question

Which explains how the calvin cycle and the krebs cycle differ

Answer 1

In Kreb's cycle we have oxidation of glucose and synthesis of ATP molecules via ETC (electron transport chain). This occurs in the mitochondria of all organisms which includes plants also. But Calvin cycle is the cycle which creates glucose in the first place.

Answer 2

One of the differences between Calvin-Benson Cycle and Krebs Cycle or citric acid cycle is their position in a cell’s metabolism. The Calvin cycle is part of anabolism, it uses energy in the form of ATP and NADPH,H+ to fix CO2and synthetize (mostly) trioses. Calvin cycle is the non-photochimic part of photosynthesis, as it only indirectly needs light, while Krebs cycle is part of catabolism and it often follows glycolysis with the oxidation of pyruvate. The Acetyl group which is previously fixed to Acetyl-CoA is fixed to oxaloacetate and oxidated into CO2. Meanwhile, energy is released with the production of GTP, NADH,H+ and FADH2. The regulation of both cycle is different as well. Although the Calvin-Benson cycle is operational in the presence of light or for a short period of time after the photosynthesis stops, the Krebs cycle’s activity is fundamentally dependent on the production of Acetyl-CoA.