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Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?
- a)Glucose
- b)Starch
- c)GP (PGA)
- d)Triose phosphate
Correct answer is option 'C'. Can you explain this answer?
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Carbon dioxide labeled with 14C has been used to identify the interme...
During the calvin cycle, the radioactive CO2 is accepted by ribulose 1,5 bisphosphate (RuBP) in the formation of the first product, 3-phosphoglyceraldehyde (PGA), which will be the first compound to contain 14C.
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Carbon dioxide labeled with 14C has been used to identify the interme...
The Calvin cycle is the light-independent stage of photosynthesis, where carbon dioxide is converted into glucose. In order to identify the intermediate compounds in this cycle, carbon dioxide labeled with 14C can be used. This is because 14C is a radioactive isotope of carbon, and its presence can be detected using various techniques.
The Calvin cycle begins with the enzyme RuBisCO catalyzing the fixation of carbon dioxide. The first stable compound formed in this process is called 3-phosphoglyceric acid (PGA), or glycerate 3-phosphate (GP). This compound is a three-carbon molecule, and it is the first compound in the Calvin cycle to contain the 14C isotope.
To further understand why GP is the first compound to contain 14C, let's look at the steps involved in the Calvin cycle:
1. Carbon Fixation: RuBisCO combines carbon dioxide (CO2) with a five-carbon molecule called ribulose-1,5-bisphosphate (RuBP) to form two molecules of GP (3-phosphoglyceric acid).
2. Reduction: ATP and NADPH produced during the light-dependent stage of photosynthesis are used to convert GP into another three-carbon molecule called glyceraldehyde-3-phosphate (G3P), also known as triose phosphate.
3. Regeneration: Some of the G3P molecules are used to regenerate RuBP, while others are used to produce glucose and other organic compounds.
Since GP is the first stable compound formed in the Calvin cycle, it is the first compound to contain the labeled 14C carbon dioxide. As the carbon dioxide molecules are fixed by RuBisCO, they become incorporated into GP. The radioactive 14C isotope can then be traced as GP is converted into other compounds, such as G3P, glucose, and starch.
In summary, GP (PGA) is the first compound in the Calvin cycle to contain the 14C isotope because it is the first stable compound formed during carbon fixation. By using carbon dioxide labeled with 14C, scientists can track the movement of carbon atoms throughout the Calvin cycle and identify the intermediate compounds involved.
The Calvin cycle begins with the enzyme RuBisCO catalyzing the fixation of carbon dioxide. The first stable compound formed in this process is called 3-phosphoglyceric acid (PGA), or glycerate 3-phosphate (GP). This compound is a three-carbon molecule, and it is the first compound in the Calvin cycle to contain the 14C isotope.
To further understand why GP is the first compound to contain 14C, let's look at the steps involved in the Calvin cycle:
1. Carbon Fixation: RuBisCO combines carbon dioxide (CO2) with a five-carbon molecule called ribulose-1,5-bisphosphate (RuBP) to form two molecules of GP (3-phosphoglyceric acid).
2. Reduction: ATP and NADPH produced during the light-dependent stage of photosynthesis are used to convert GP into another three-carbon molecule called glyceraldehyde-3-phosphate (G3P), also known as triose phosphate.
3. Regeneration: Some of the G3P molecules are used to regenerate RuBP, while others are used to produce glucose and other organic compounds.
Since GP is the first stable compound formed in the Calvin cycle, it is the first compound to contain the labeled 14C carbon dioxide. As the carbon dioxide molecules are fixed by RuBisCO, they become incorporated into GP. The radioactive 14C isotope can then be traced as GP is converted into other compounds, such as G3P, glucose, and starch.
In summary, GP (PGA) is the first compound in the Calvin cycle to contain the 14C isotope because it is the first stable compound formed during carbon fixation. By using carbon dioxide labeled with 14C, scientists can track the movement of carbon atoms throughout the Calvin cycle and identify the intermediate compounds involved.
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Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer?
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Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer?.
Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer?.
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Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Carbon dioxide labeled with 14C has been used to identify the intermediate compounds in the Calvin cycle, the light independent stage in photosynthesis. Which compound would be the first to contain the 14C?a)Glucoseb)Starchc)GP (PGA)d)Triose phosphateCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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