Selective Permeability of Plasma Membrane — NEET Biology

Correct answer: D — A-vi, B-ii, C-v, D-iv, E-iii, F-i

Let's match each component from Column I with its correct characteristic/function from Column II based on NCERT text: A. Glycocalyx: It is the outermost layer of the cell envelope and can be a loose sheath (slime layer) or a thick, tough capsule for protection. So, A-vi. B. Cell wall: It determines the shape of the cell and provides strong structural support to prevent the bacterium from bursting or collapsing. So, B-ii. C. Plasma membrane: It is selectively permeable in nature and structurally similar to that of eukaryotes. So, C-v. D. Mesosome: It is a specialized membranous structure formed by extensions of the plasma membrane, helping in cell wall formation, DNA replication, and respiration. So, D-iv. E. Plasmid DNA: Small circular DNA outside the genomic DNA, which can confer unique phenotypic characters like resistance to antibiotics. So, E-iii. F. 70S Ribosomes: These are the site of protein synthesis in prokaryotes. So, F-i. Combining these matches, the correct sequence is A-vi, B-ii, C-v, D-iv, E-iii, F-i. This corresponds to option A. This question assesses the understanding of various structural components unique to prokaryotic cells and their specific physiological roles, as described in NCERT.