Photosynthesis: Converting Sunlight into Chemical Energy

Photosynthesis converts sunlight into chemical energy within chloroplasts, where carbon dioxide and water react to produce sugars and oxygen. This process is crucial for ecosystems, as it transforms solar energy into a form that can be used by other organisms, thus supporting the food chain. Additionally, photosynthesis helps regulate atmospheric levels of carbon dioxide and oxygen, maintaining balance in the environment.

What is the initial form of energy that is converted during photosynthesis?

• Thermal energy

• Sunlight

• Mechanical energy

• Chemical energy

Which two substances react in chloroplasts to produce sugars?

• Oxygen and nitrogen

• Carbon dioxide and water

• Carbon monoxide and water

• Hydrogen and oxygen

What are the byproducts of the chemical reactions in chloroplasts?

• Sugars and oxygen

• Water and carbon dioxide

• Sugars and nitrogen

• Nitrogen and oxygen

How does photosynthesis contribute to the food chain?

• By converting chemical energy into sunlight

• By reducing water levels

• By providing usable chemical energy

• By producing heat energy

What role does photosynthesis play in the atmosphere?

• It increases nitrogen levels

• It decreases sunlight

• It regulates carbon dioxide and oxygen levels

• It produces carbon monoxide