The light dependent reaction shown are:

1. Carbon Dioxide Enters the Cycle: 6 carbon dioxide molecules from the atmosphere are combined with 6 5-carbon molecules in the very first step of the cycle. This produces twelve 3-carbon compounds.
2. Sugar Production: Energy from adenosine triphosphate and high-energy electrons from nicotinamide adenine dinucleotide phosphate are used to convert the 3-carbon molecules to higher-energy forms. Two of these 3-carbon molecules are removed from the cycle to produce sugars, lipids, amino acids, and other compounds. The remaining 3-carbon molecules are converted back into 5-carbon forms that are used to start the cycle again.

The following are marked on the diagram:
Cytoplasm
Stroma
Carbon dioxide molecule
Adenosine Diphosphate
Adenosine Triphosphate
Nicotinamide adenine dinucleotide phosphate
Nicotinamide adenine dinucleotide phosphate plus Sugar and other compounds