University:
Missouri State University
Course:
BIO 121 | General Biology I
Academic year:

2025
Views:

345

Pages:

2
Author:

Nicole Wang

Understanding Carbon Transfer: Photosynthesis One important way carbon moves from the atmosphere to the biosphere is through a key biological process that enables plants to harness energy from sunlight. This process is known as photosynthesis. What is Photosynthesis? Photosynthesis is the method by which green plants, algae, and some bacteria convert light energy into chemical energy, storing it in the form of glucose. This not only feeds the plants themselves but also provides oxygen and energy for other living organisms in the biosphere. The Photosynthesis Process The process occurs primarily in the chloroplasts of plant cells and can be broken down into two main stages: Light-dependent Reactions: These reactions take place in the thylakoid membranes of the chloroplasts. Chlorophyll absorbs sunlight, which energizes electrons. The energy from those energized electrons is used to split water molecules (( H_2O )), releasing oxygen (( O_2 )) as a byproduct. ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) are produced. Calvin Cycle (Light-independent Reactions): Takes place in the stroma of the chloroplasts. Uses ATP and NADPH generated in the light-dependent reactions to convert carbon dioxide (( CO_2 )) from the atmosphere into glucose (( C_6H_{12}O_6 )). The overall equation for photosynthesis can be summarized as: Conclusion In summary, the process that allows carbon to move from the atmosphere to the biosphere through light energy conversion in plants is called photosynthesis. This natural process is essential for life on Earth, providing food and oxygen. Further Exploration For more information, you can explore the following resources: Kids Discover - What is Photosynthesis? National Geographic - Photosynthesis Encyclopaedia Britannica - Photosynthesis