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Prokaryotic and eukaryotic cells generally have which of the following features in common? 

Option: 1

Membrane-bounded nucleus


Option: 2

Cell wall made of cellulose


Option: 3

Ribosomes


Option: 4

Linear chromosomes made of DNA and protein


Answers (1)

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Origin and Structure of Eukaryotic Cell -

Origin and Structure of Eukaryotic Cell

  • The eukaryotic cells are believed to have originated through plasma membrane invagination and endosymbiotic theory. 
  • According to these hypotheses, eukaryotic cells have formed the nucleus through invagination of the plasma membrane around the nucleoid. 

  • The endomembrane system was formed due to the proliferation of the infolded plasma membrane. 

  • The semi-autonomous organelles mitochondria and chloroplasts were free-living prokaryotes that were engulfed by the eukaryotic cell ancestor.

  • Eukaryotic cells are internally compartmentalized. These compartments are called organelles. 

  • Organelles are membrane-bound structures with specific sets of functions. 

  • In protists, fungi and plants, the cell wall is the outermost covering followed by the plasma membrane. In animal cells, the cell wall is absent. 

  • Eukaryotic cells have a lattice of proteins called cytoskeleton. It provides shape and allows the movement of cell organelles

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Ribosomes are not membrane-bound organelles. They are present both in prokaryotic and eukaryotic cell.
 

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jitender.kumar

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