
Interpretation: The reason the Calvin cycle is crucial to the functioning of all life forms should be determined.
Concept introduction:
The Calvin cycle is a process used by the plants and algae to convert inorganic carbon dioxide from the atmosphere into carbohydrates, which is important for the growth and functioning of plants.

Explanation of Solution
All living forms on earth depend on photosynthesis directly or indirectly. Autotrophs and plants depend on their energy and food requirements on the Calvin cycle. Heterotrophs depend on plants for food and thus indirectly rely on the Calvin cycle.
The Calvin cycle is divided into four main stages: carbon fixation, reduction phase, carbohydrate formation and regeneration. In order to fuel the reactions of the Calvin cycle, energy is obtained from ATP and NADPH. These chemical compounds transfer the energy captured from sunlight. Therefore, all life forms directly or indirectly depend on the Calvin cycle for their survival.
The Calvin cycle is crucial to the functioning of all life forms as autotrophs and heterotrophs directly or indirectly rely on the Calvin cycle for food and energy.
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Chapter 20 Solutions
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