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7.2 Photosynthesis occurs in chloroplasts Flashcards | Quizlet
Photosynthesis occurs inside chloroplasts. Chloroplasts contain chlorophyll, a green pigment found inside the thylakoid membranes. These chlorophyll molecules are arranged in groups called photosystems. There are two types of photosystems, Photosystem II and Photosystem I. When a chlorophyll molecule absorbs light, the energy from this light raises an electron within the chlorophyll molecule to a higher energy state. The chlorophyll molecule is then said to be photoactivated. Excited electron anywhere within the photosystem are then passed on from one chlorophyll molecule to the next until they reach a special chlorophyll molecule at the reaction centre of the photosystem. This special chlorophyll molecule then passes on the excited electron to a chain of electron carriers.
As a by-product of the photosynthesis reaction that occurs within the structure, oxygen is released which is essential for the survival of all living organisms.
The sophistication of the inner chloroplast structure and its functioning is mind-boggling when you realize how precisely everything is put in place for the process of photosynthesis to occur.
Photosynthesis in plants occurs in chloroplast by …
The light-independant reactions of photosynthesis occur in the stroma of the chloroplast and involve the conversion of carbon dioxide and other compounds into glucose. The light-independent reactions can be split into three stages, these are carbon fixation, the reduction reactions and finally the regeneration of ribulose bisphosphate. Collectively these stages are known as the Calvin Cycle.
All photosynthesis in green plants and algae occurs in chloroplasts
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