Multiple Choice
Which of the following reactions is not typically involved in human-caused groundwater pollution?
3. Acids and Bases
Organic Chemistry Reactions
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In the context of organic chemistry reactions, why is the third stage of the Calvin cycle referred to as the regeneration stage?
A
It regenerates ATP molecules for energy.
B
It regenerates RuBP, allowing the cycle to continue.
C
It regenerates glucose molecules for storage.
D
It regenerates NADPH for the reduction phase.
Verified step by step guidance1
The Calvin cycle is a series of biochemical redox reactions that take place in the stroma of chloroplasts in photosynthetic organisms.
The cycle is divided into three main stages: carbon fixation, reduction, and regeneration.
In the third stage, known as the regeneration stage, the molecule ribulose-1,5-bisphosphate (RuBP) is regenerated.
RuBP is essential for the cycle to continue because it is the molecule that reacts with carbon dioxide in the first stage of the cycle.
The regeneration of RuBP ensures that the Calvin cycle can proceed continuously, allowing for the ongoing fixation of carbon dioxide into organic molecules.
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