Chloroplasts are organelles found in plant cells and some algae cells that are responsible for photosynthesis, the process by which light energy is converted into chemical energy. Chloroplasts contain chlorophyll, a green pigment that absorbs light energy, as well as other pigments and enzymes necessary for photosynthesis. Research in the field of chloroplast biology focuses on understanding the structure, function, and regulation of chloroplasts, as well as their role in plant growth, development, and response to environmental stresses. This research area is important for improving crop yields, developing biofuels, and understanding the impact of climate change on plant health.