Ncert Exercises & Solutions

Which of the following is not true of a eukaryotic cell?

1.	Cell wall is made up of peptidoglycans
2.	It has 80S type of ribosome present in the cytoplasm
3.	Mitochondria contain circular DNA
4.	Membrane bound organelles are present

(a) A cell wall made up of peptidoglycan is found in bacteria and not in eukaryotes.Eukaryotic cell wall is made up of cellulose hemicellulose, pectin chitin etc. Thus, is not true for eukaryotic cell.

In eukaryotes ribosomes present in cytoplasm is of 80S type but the ribosome in mitochondria is of 70S type, which represents the type present in prokaryotic cell.
In eukaryotes cell organelles are highly complex and membrane bound and the mitochondria in eukaryotes bear a seperate circular DNA.

Page 132, XI NCERT

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