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Question
The process of photorespiration in C3 plants starts from
The process of photorespiration in C3 plants starts from
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Solution
The correct option is A Phosphoglycolate
The process of photorespiration in C3 plants takes place in the presence of excess O2 in the atmosphere. RUBISCO, the main enzyme of Calvin cycle that fixes CO2 acts as ribulose bis-phosphate oxygenase under the low atmospheric concentration of CO2 (below 1%) and increased concentration of O2. In the presence of high concentration of O2, the enzyme RuBP oxygenase splits a molecule of ribulose-1,5-bisphosphate into one molecule each of 3-phosphoglyceric acid and 2-phosphoglycolate which is the first step of the process. Thus, the correct answer is option B.
The process of photorespiration in C3 plants takes place in the presence of excess O2 in the atmosphere. RUBISCO, the main enzyme of Calvin cycle that fixes CO2 acts as ribulose bis-phosphate oxygenase under the low atmospheric concentration of CO2 (below 1%) and increased concentration of O2. In the presence of high concentration of O2, the enzyme RuBP oxygenase splits a molecule of ribulose-1,5-bisphosphate into one molecule each of 3-phosphoglyceric acid and 2-phosphoglycolate which is the first step of the process.
Thus, the correct answer is option B.
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