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what is the function of grana, lumen stroma lamellae ? in thalakoids, plastids topic
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what is the function of grana, lumen stroma lamellae ? in thalakoids, ...
Grana, are stacks of structures called thylakoids which are little discs of membrane on which the light-dependent reactions of photosynthesis take place. They provide optimum surface area, maximizing the amount of photosynthesis.
The thylakoid lumen is a continuous aqueous phase enclosed by the thylakoid membrane. It plays an important role for photophosphorylation during photosynthesis. During the light-dependent reaction, protons are pumped across the thylakoid membrane into the lumen making it acidic down to pH 4.
Stroma contain the enzymes necessary for carbon fixation, it also manages the chloroplast response to cellular stresses and signaling between various organelles. It plays an important role in both the light-dependent and light-independent reactions of photosynthesis.
Lamellae act as a type of wall at which chloroplasts can be fixed within, achieving the maximum absorption of light.
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what is the function of grana, lumen stroma lamellae ? in thalakoids, plastids topic Related: Plastids, Chloroplast, Leucoplast, Chromoplast?
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