What are photochemical and carbon-fixation reactions in chloroplast?
The photosynthetic organisms use sunlight energy and electrons from water in order to realize the CO2 conversion into organic compounds. This process is called carbon fixation.
Chloroplast represents a specialized plastid organelle, which carries out photosynthesis. During photosynthesis, reactions occur, they being grouped into two main categories, such that: photosynthetic electron transfer reactions, carbon-fixation reactions.
Carbon-fixation reaction produce the disaccharide sucrose, which is transported between plant cells as a source of energy and organic molecules, needed in the process of growing of plant.
Some of the chloroplast enzymes, used in carbon-fixation reaction, are inactive in dark, become active only if the plant is exposed to sunlight and the electron transport process is stimulated.