A) One
B) Two
C) Three
D) Four
Correct Answer: B
Solution :
During photorespiration RuBP is oxidised to form PGA and phosphoglycolate. Phosphoglycolate is hydrolysed to form glycolate, glycolate forms glyoxylate. Glyoxylate give rise to amino acid glycine. Two molecules of glycine condense to form a molecule of serine and \[\text{C}{{\text{O}}_{\text{2}}}\]and ammonia are released. \[\text{2 glycine }+\text{ }\alpha -\text{ketoglutarate}+\text{NA}{{\text{D}}^{+}}\] \[\xrightarrow[{}]{{}}~\text{serine }+\text{ glutamate }+\text{ NADH }+\text{ C}{{\text{O}}_{\text{2}}}\uparrow \]
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