The Nucleus

2. Contents
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3. DDeeffiinniittiioonn ooff NNuucclleeuuss
Cell Nucleus is a membrane-enclosed
cell organelle that can
be found in all eukaryotic cells.

4. DDeeffiinniittiioonn ooff NNuucclleeuuss
Only eukaryotic cells have
nucleus. Prokaryotic cells do
not contain a cell nucleus of
membrane bound organelles.
Example: Bacteria

5. DDeeffiinniittiioonn ooff NNuucclleeuuss
Cell Nucleus is the main
organelle which controls the
whole cell. It also helps cell
to reproduce.

6. JJoobb ooff NNuucclleeuuss
Cell Nucleus is the
command center of the cells.
So, it controls the activities of
the cell, no matter what it is.

7. JJoobb ooff NNuucclleeuuss
Cell Nucleus have most of
the DNA and genetic
information. In other words, it
is the most important part of
the eukaryotic cells. Nucleus
DNA

8. SSttrruuccttuurree ooff NNuucclleeuuss

9. SSttrruuccttuurree ooff NNuucclleeuuss
--OOuutteerr MMeemmbbrraannee--
Outer Membrane is one of the two
membranes that is facing the cytoplasm.

10. SSttrruuccttuurree ooff NNuucclleeuuss
--IInnnneerr MMeemmbbrraannee--
Inner Membrane is also one of the two
membranes which separates the nuclear
matrix from the intermembrane space.

11. SSttrruuccttuurree ooff NNuucclleeuuss
--NNuucclleeooppllaassmm--
Nucleoplasm is one of the types of
protoplasm. It is covered by the nuclear
membrane. This part is a stinky liquid that
surrounds the chromosomes and nucleoli.

12. SSttrruuccttuurree ooff NNuucclleeuuss
--NNuucclleeoolluuss--
Nucleolus is usually in the center of the
Nucleus. It is composed of protein and
nucleic acids. *Many people think Nucleus
and Nucleolus are the same thing, but they
aren’t.

13. SSttrruuccttuurree ooff NNuucclleeuuss
--CChhrroommaattiinn--
Chromatin is composed of long thin stands
of DNA. And it contains instructions that
control cell metabolism and heredity.

14. SSttrruuccttuurree ooff NNuucclleeuuss
--NNuucclleeaarr EEnnvveellooppee--
Nuclear Envelope is the double membrane
that is surrounding the nucleus.

15. SSttrruuccttuurree ooff NNuucclleeuuss
--NNuucclleeaarr PPoorree--
Nuclear Pores are the huge complexes of
protein that cross the nuclear envelope.

16. AArrmmaannoovvaa AAlliinnaa
KKyyppsshhaakkbbaayy AArruuzzhhaann

17. End Show