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Chromatin is formed of strands of DNA and proteins called histones.

NUCLEUS HAS DOUBLE MEMBRANE NUCLEAR ENVELOPE ,HAVING NUMEROUS PORES FOR COMMUNICATION, CONTAINS DNA, CHROMOSOMES VISIBLE WHEN CELL IS DIVIDING, CELL CANNOT REPRODUCE WITHOUT A NUCLEUS .

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Chromatin is formed of strands of DNA and proteins called histones.

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  1. NUCLEUSHAS DOUBLE MEMBRANE NUCLEAR ENVELOPE ,HAVING NUMEROUS PORES FOR COMMUNICATION, CONTAINS DNA, CHROMOSOMES VISIBLE WHEN CELL IS DIVIDING, CELL CANNOT REPRODUCE WITHOUT A NUCLEUS • Chromatin is formed of strands of DNA and proteins called histones. • A nucleosome consists of 8 histones with a strand of DNA wrapped around them and secured with a 9th histone. • A chromosome is a highly coiled structure of many nucleosomes. Molecules of the cell ribosomes are manufactured in the nucleolus. These molecules pass through the nuclear envelope and assembled outside.

  2. Centrosome occurs in eukaryotic cells. It consists of a pair of centrioles. Involved in assembling microtubules during cell division

  3. SUMMARY

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