Examlex
Which of the following levels of ecological organization is arranged in the correct sequence from most to least inclusive?
Thylakoid Discs
Membrane-bound structures within chloroplasts where the light-dependent reactions of photosynthesis occur.
Granum
A stack of thylakoids within the chloroplasts of plant cells, crucial for the light reactions of photosynthesis.
Porphyrin Ring
A large, heterocyclic macrocycle composed of four modified pyrrole subunits interconnected via methine bridges, essential in the structure of heme groups and chlorophyll.
Magnesium
A chemical element with the symbol Mg, essential for living cells, playing a critical role in over 300 enzymatic reactions, including energy production.
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