A) pili
B) cristae
C) fimbriae
D) mesosomes
Correct Answer: D
Solution :
Mesosomes are extensions of the plasmamembrane within the bacterial cell (cytoplasm), involving complex whorls of convoluted membranes. They are seen in chemoautotrophic bacteria such as Nitrosomonas /and in photosynthetic bacteria such as Rhodopseudomonas where they are the sites of the photosynthetic pigments. Mesosomes are also involved in. cross wall (septum) formation during cell division.
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