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  • Where Do Dark Reactions Occur in a Chloroplast? (Stroma Explained)
    Dark reactions, also known as the Calvin cycle, occur in the stroma of a chloroplast.

    Here's a breakdown:

    * Chloroplasts: These are organelles found in plant cells that are responsible for photosynthesis.

    * Stroma: The stroma is the fluid-filled space surrounding the thylakoid membranes within the chloroplast.

    * Thylakoid Membranes: These are the membranes that contain chlorophyll and other pigments, and are the site of the light-dependent reactions.

    The dark reactions use the energy produced by the light-dependent reactions (ATP and NADPH) to convert carbon dioxide into sugar. This process takes place in the stroma, which provides the necessary enzymes and environment for the reactions to occur.

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