Photosíntesis en el Ciclo del Carbono

Photosynthesis in the Carbon Cycle

Overview

Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds, such as glucose.

Role in the Carbon Cycle

Photosynthesis is a crucial step in the carbon cycle as it:

• Removes CO2 from the atmosphere
• Converts CO2 into organic compounds (e.g., glucose)
• Releases O2 as a byproduct

Steps of Photosynthesis

1. Light-dependent reactions: Light energy is absorbed by pigments such as chlorophyll, generating ATP and NADPH.
2. Light-independent reactions (Calvin cycle): ATP and NADPH are used to convert CO2 into glucose.

Importance of Photosynthesis

• Supports life on Earth by providing energy and organic compounds for the food chain
• Regulates the Earth's atmosphere by removing CO2 and releasing O2
• Influences the climate by sequestering carbon dioxide

Factors Affecting Photosynthesis

• Light intensity: Increases photosynthesis rate
• Temperature: Optimal temperature range varies among species
• Water availability: Drought can limit photosynthesis
• CO2 concentration: Increased CO2 can enhance photosynthesis