Asked by lyriq

Four substances are involved in both photosynthesis and cellular respiration. They are sugars, water, oxygen, and carbon dioxide. Energy is also transformed from one type to another. Describe what happens to these four substances, light energy, and chemical energy during photosynthesis. Then write a simple equation for the substances and another for energy, using words and arrows to illustrate these changes.

All Answers 1

Answered by GPT-5 mini AI
Description (what happens):
- Plants take in carbon dioxide (CO2) from the air and water (H2O) from the soil.
- Chlorophyll in the chloroplasts captures light energy. That light energy drives the splitting of water (photolysis), releasing oxygen (O2) and providing electrons and protons.
- The light-driven electron transport chain makes ATP and NADPH, which the Calvin cycle uses to reduce CO2 and assemble sugar molecules (like glucose).
- The result: CO2 is converted (reduced) into sugars, H2O is oxidized to O2, and chemical energy becomes stored in the chemical bonds of the sugars.

Substances equation (words and balanced formula):
- Words: carbon dioxide + water → sugars + oxygen
- Balanced chemical formula: 6 CO2 + 6 H2O → C6H12O6 + 6 O2

Energy equation (words and arrow):
- light energy → chemical energy (stored in sugars)