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Multiple Choice
In the context of organic chemistry reactions, what would be the effect on photosynthesis if one of the essential elements, such as carbon dioxide, was not present?
A
Photosynthesis would be unable to produce glucose, halting the process.
B
Photosynthesis would produce oxygen instead of glucose.
C
Photosynthesis would proceed normally without any changes.
D
Photosynthesis would increase its rate to compensate for the missing element.
Verified step by step guidance
1
Photosynthesis is a process used by plants to convert light energy into chemical energy, stored as glucose. The general equation for photosynthesis is: .
Carbon dioxide () is a crucial reactant in the photosynthesis process. It is used in the Calvin cycle to produce glucose, a sugar that serves as an energy source for plants.
If carbon dioxide is absent, the Calvin cycle cannot proceed, as it relies on to fix carbon into glucose. Without , glucose production halts.
The absence of carbon dioxide would mean that photosynthesis cannot produce glucose, effectively stopping the process. Oxygen production is linked to the light-dependent reactions, which can still occur, but without glucose production, the overall process of photosynthesis is incomplete.
Therefore, the correct understanding is that without carbon dioxide, photosynthesis cannot produce glucose, halting the process. It does not produce oxygen instead of glucose, nor does it proceed normally or increase its rate to compensate.