Light-independent reactions

Definition

Light-independent reactions, also known as the Calvin Cycle, occur in the stroma of chloroplasts and do not require light to proceed. These reactions use ATP and NADPH produced in the light-dependent reactions to synthesize glucose from carbon dioxide.

5 Must Know Facts For Your Next Test

1. Light-independent reactions take place in the stroma of chloroplasts.
2. The primary purpose is to convert carbon dioxide and other compounds into glucose.
3. ATP and NADPH generated by light-dependent reactions are consumed during these processes.
4. The Calvin Cycle consists of three main stages: carbon fixation, reduction phase, and regeneration of RuBP.
5. Rubisco is a key enzyme that catalyzes the first step of carbon fixation.

Review Questions

Related terms

Light-dependent Reactions: These occur in the thylakoid membranes and produce ATP and NADPH using light energy

Stroma: The fluid-filled space surrounding thylakoids in chloroplasts where light-independent reactions take place

Rubisco: An enzyme that catalyzes the first step of carbon fixation in the Calvin Cycle