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Question
Which of the following organelle is related with photorespiration?
Which of the following organelle is related with photorespiration?
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Solution
The correct option is A Peroxisome
The nucleus is the double membrane bound organelle of eukaryotic cells that serve to house genetic material. The cell wall is the rigid structure present outside the cell membrane of plants, fungi, algal and microbial cells. Being rigid in composition, it provides mechanical support, help maintains the cell shape and prevent lysis of the cell. Lysosomes, present in the cytoplasm, are the suicidal bags of cell that digest and remove the wear and tear organelles and molecules from the cell. Photorespiration is oxidation of RuBP, rather than carboxylation, by enzyme RUBISCO and formation of 2-phosphoglycolate. Dephosphorylation of 2 phosphoglycolate forms glycolate which in turn enters peroxisomes and is then transaminated to glycine. Condensation of two glycine molecules to form serine and carbon dioxide by enzyme glycine decarboxylase takes place in mitochondria. Serine again enters peroxisomes and is converted to hydroxypyruvate and then to glycerate. The glycerate reenters the chloroplasts and is phosphorylated to enter Calvin cycle. Thus, the correct answer is option A.
The nucleus is the double membrane bound organelle of eukaryotic cells that serve to house genetic material. The cell wall is the rigid structure present outside the cell membrane of plants, fungi, algal and microbial cells. Being rigid in composition, it provides mechanical support, help maintains the cell shape and prevent lysis of the cell. Lysosomes, present in the cytoplasm, are the suicidal bags of cell that digest and remove the wear and tear organelles and molecules from the cell. Photorespiration is oxidation of RuBP, rather than carboxylation, by enzyme RUBISCO and formation of 2-phosphoglycolate. Dephosphorylation of 2 phosphoglycolate forms glycolate which in turn enters peroxisomes and is then transaminated to glycine. Condensation of two glycine molecules to form serine and carbon dioxide by enzyme glycine decarboxylase takes place in mitochondria. Serine again enters peroxisomes and is converted to hydroxypyruvate and then to glycerate. The glycerate reenters the chloroplasts and is phosphorylated to enter Calvin cycle. Thus, the correct answer is option A.
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