Put the steps to the calvin cycle in the correct order. 1. nadph donates electrons, which can't be seen in the model, to the 3 carbon molecule. 2. the 5 carbon molecule is regenerated. one 3 carbon molecule exits to the cytoplasm. it will combine with another one to make sugar. 3. the 6 carbon chain is unstable and breaks apart. 4. atp donates a phosphate group to the 3 carbon molecules. 5. rubisco adds carbon onto your carbon chain. you in advance!