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Question
Biology
Posted 10 months ago
Some PROKARYOTES are photosynthetic. Predict where the pigments might be located in these cells.
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Answer from Sia
Posted 10 months ago
Answer
The pigments in photosynthetic prokaryotes are located in the cytoplasmic membrane, within infoldings called thylakoids or in specialized structures known as chromatophores.
Solution
a
Prokaryotic cell structure: Prokaryotic cells lack membrane-bound organelles, which means they do not have chloroplasts where photosynthetic eukaryotes house their pigments
b
Photosynthetic machinery: Photosynthetic prokaryotes, such as cyanobacteria, have their photosynthetic pigments embedded directly in the cytoplasmic membrane or in membrane infoldings known as thylakoids
c
Chromatophores: Some photosynthetic bacteria contain specialized structures called chromatophores, which are vesicle-like and also contain pigments
Key Concept
Photosynthetic pigments in prokaryotes are located in the cytoplasmic membrane or associated structures.
Explanation
Since prokaryotes lack chloroplasts, they utilize their cell membrane or membrane-derived structures to house the necessary pigments for photosynthesis.

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