Texas A&M University (TAMU) HORT 201 Horticultural Science and Practices Exam 1 Practice

Light energy powers the synthesis of chemical energy stored in glucose. In the chloroplasts, light-dependent reactions capture photons to split water, release oxygen, and make ATP and NADPH. Those energy carriers drive the Calvin cycle, which fixes carbon dioxide into sugars like glucose. The overall photosynthesis equation shows light energy entering the system and enabling the formation of chemical bonds in sugar, so the statement is true. It isn’t about turning chemical energy into light energy, nor about turning heat into sugar—the energy flows from light into chemical energy stored in the sugar.