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When carbon dioxide enters into plant cells, it is fixed to which molecule?

A. RuBisCO
B. RuBP
C. NADPH
D. 3-PGA

Answer :

Final answer:

When carbon dioxide enters into plant cells, it is fixed to the molecule called RuBP. This process is known as carbon fixation and is the first step in the Calvin cycle or the dark reaction of photosynthesis. Carbon dioxide is initially combined with RuBP by the enzyme RuBisCO, forming an unstable six-carbon compound that splits into two molecules of 3-PGA.


Explanation:

When carbon dioxide enters into plant cells, it is fixed to the molecule called RuBP, which stands for ribulose-1,5-bisphosphate. This process is known as carbon fixation and is the first step in the Calvin cycle or the dark reaction of photosynthesis.


Carbon dioxide is initially combined with RuBP by the enzyme RuBisCO. This forms an unstable six-carbon compound that immediately splits into two molecules of 3-phosphoglycerate (3-PGA).


Therefore, the correct answer is Option D. 3-PGA.


Learn more about carbon fixation here:

https://brainly.com/question/7142342


Final answer:

Carbon dioxide entering plant cells is fixed to the molecule RuBP (Ribulose-1,5-bisphosphate) in a reaction catalysed by the enzyme RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase).

Explanation:

When carbon dioxide enters into plant cells during the process of photosynthesis, it is fixed to the molecule RuBP (Ribulose-1,5-bisphosphate). This reaction is catalysed by the enzyme RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase). RuBisCO facilitates the reaction between RuBP and the carbon dioxide to form an unstable six-carbon compound which quickly breaks down into two molecules of 3-phosphoglycerate (3-PGA).

Learn more about Photosynthesis here:

https://brainly.com/question/29764662

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