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HomeHomework HelpbiologyCalvin Cycle Overview

Calvin Cycle Overview

The Calvin cycle, also known as the light-independent reactions, is a series of biochemical processes occurring in the stroma of chloroplasts, where carbon dioxide is fixed and converted into glucose using ATP and NADPH produced during the light-dependent reactions of photosynthesis. This cycle involves three main phases: carbon fixation, reduction, and regeneration of ribulose bisphosphate (RuBP).

intermediate
2 hours
Biology
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Overview

The Calvin cycle is a crucial part of photosynthesis, allowing plants to convert carbon dioxide into glucose, which serves as an energy source. This cycle occurs in the stroma of chloroplasts and involves three main phases: carbon fixation, reduction, and regeneration of RuBP. Each phase plays a vit...

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Key Terms

Calvin Cycle
A series of biochemical reactions in plants that convert carbon dioxide into glucose.

Example: The Calvin cycle occurs in the stroma of chloroplasts.

Carbon Fixation
The process of converting inorganic carbon (CO2) into organic compounds.

Example: Carbon fixation is the first step of the Calvin cycle.

RuBP
Ribulose bisphosphate, a 5-carbon sugar that is a substrate in the Calvin cycle.

Example: RuBP combines with CO2 to start the Calvin cycle.

NADPH
A reduced form of nicotinamide adenine dinucleotide phosphate, used as an electron carrier.

Example: NADPH provides the reducing power for the Calvin cycle.

ATP
Adenosine triphosphate, the energy currency of the cell.

Example: ATP is produced during light-dependent reactions and used in the Calvin cycle.

Stroma
The fluid-filled space inside chloroplasts where the Calvin cycle occurs.

Example: The stroma contains enzymes necessary for the Calvin cycle.

Related Topics

Photosynthesis
The overall process by which plants convert light energy into chemical energy.
intermediate
Light-Dependent Reactions
The first stage of photosynthesis where light energy is converted into ATP and NADPH.
intermediate
Plant Metabolism
The biochemical processes that occur within plants, including photosynthesis and respiration.
advanced

Key Concepts

Carbon FixationReduction PhaseRegeneration of RuBPEnergy Utilization