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Multiple Choice Question

During the C3 pathway (Calvin cycle) of photosynthesis, what is the very first stable organic compound formed after CO2 fixation?प्रकाश संश्लेषण के C3 मार्ग (केल्विन चक्र) के दौरान, CO2 स्थिरीकरण के बाद बनने वाला सबसे पहला स्थिर कार्बनिक यौगिक कौन सा है?

  • A
    Phosphoenolpyruvate (PEP)
    फॉस्फोइनोलपाइरूवेट (PEP)
  • B
    Ribulose-1,5-bisphosphate (RuBP)
    राइबुलोज-1,5-बिसफॉस्फेट (RuBP)
  • C
    Oxaloacetic acid (OAA)
    ऑक्जेलोएसिटिक एसिड (OAA)
  • D
    3-Phosphoglyceric acid (3-PGA)
    3-फॉस्फोग्लिसरिक एसिड (3-PGA)
Explanation:
In the C3 cycle, the enzyme Rubisco catalyzes the reaction of RuBP and CO2 to form two molecules of 3-Phosphoglyceric acid (a 3-carbon compound).
C3 चक्र में, एंजाइम रुबिस्को RuBP और CO2 की प्रतिक्रिया को उत्प्रेरित करके 3-फॉस्फोग्लिसरिक एसिड (3-कार्बन यौगिक) के दो अणु बनाता है।
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This question belongs to the set "Biology Practice Test 17 – Unit 5 (Plant Physiology & Taxonomy (Botany) – SET 1/4)". Click below to read detailed notes and attempt the full quiz.

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