Cell Division and New Cell Formation — NEET Biology
📚 Practice ConceptNew cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials
Which of the following statements concerning the surface structures and modifications of bacterial cells are correct? S1: Fimbriae are small, bristle-like fibers that assist bacteria in attaching to host tissues and surfaces like rocks in streams. S2: Flagella are surface structures primarily responsible for motility, while pili are elongated tubular structures involved in attachment but not motility. S3: The capsule, a thick and tough glycocalyx, provides structural support and determines the shape of the bacterial cell. S4: Mesosomes are internal, membrane-bound organelles that contain pigments in photosynthetic prokaryotes like cyanobacteria. S5: Ribosomes in prokaryotes are 80S type and are primarily involved in storage of reserve materials.
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