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In eubacteria, a cellular component that resembles eukaryotic cell is
A
Cell wall
B
Plasma membrane
C
Nucleus
D
Ribosomes
Detailed Solution
The plasma membrane of bacteria is a selectively permeable lipid bilayer with proteins, structurally similar to that of eukaryotic cells (NCERT: 'this membrane is similar structurally to that of the eukaryotes').
Cell wall: the bacterial wall is made of peptidoglycan, unlike the cellulose wall of plants or the chitin wall of fungi.
Nucleus: bacteria have no membrane-bound nucleus; the genetic material lies naked as a nucleoid.
Ribosomes: bacteria have 70S ribosomes, whereas the cytoplasmic ribosomes of eukaryotes are 80S.
Hence the component that resembles the eukaryotic cell is the plasma membrane.
Cell wall: the bacterial wall is made of peptidoglycan, unlike the cellulose wall of plants or the chitin wall of fungi.
Nucleus: bacteria have no membrane-bound nucleus; the genetic material lies naked as a nucleoid.
Ribosomes: bacteria have 70S ribosomes, whereas the cytoplasmic ribosomes of eukaryotes are 80S.
Hence the component that resembles the eukaryotic cell is the plasma membrane.