DENDROLOGY

Detailed explanation-1: -Glucose (C6H12O6) has 6 carbon atoms. We have 6 molecules of RuBP, so we have a total of 6 * 5 = 30 carbon atoms from RuBP. We need to reach 6 carbon atoms for a single glucose molecule.

Detailed explanation-2: -RuBP combines with CO2 and forms an unstable compound that splits into two molecules of 3-PGA. So, two molecules of 3-PGA (3-phosphoglycerate) are synthesized for every CO2 fixed in the Calvin cycle. For the synthesis of one molecule of glucose, 6 carbon dioxide molecules are required and hence six Calvin cycles occur.

Detailed explanation-3: -How many carbon dioxide molecules must be added to RuBP to make a single molecule of glucose? Six carbon dioxide molecules are required to produce two G3P molecules, which can be combined to make one glucose molecule.

Detailed explanation-4: -Six molecules of CO2 are required to synthesise on emolecule of glucoses each of which undergoes a C3 cycle Hence, 6 molecules of CO2 synthesis a glucose molecule after 6 turns of Calvin cycle.

Detailed explanation-5: -The most common pathway combines one molecule of CO2 with a 5-carbon sugar called ribulose biphosphate (RuBP). The enzyme which catalyzes this reaction (nicknamed RuBisCo) is the most abundant enzyme on earth!