NUCLEUS: INFORMATION

CENTERPresenter: Oanh Le

Animal Cell (cutaway view of generalized cell)

Presenter: Oanh Le

Surface of Nuclear Envelope Vs. Cutting surface of

Nucleus- Nucleus: Information center- The nucleus envelop encloses the

nucleus, separating its contents from the cytoplasm.

- Double membranes. These membranes are separated with a space about 20-40 micrometers.

- There are pore complexs on the outer membrane. They are acting as the entry and exit of the RNA and protein.

- In side the nucleus, DNA is organized into discrete units called chromosomes.

Chromatin Vs. Chromosomes

- Chromatin is the complex of DNA and protein.

- They are organized form in long loop to form chromosomes.

- As cells prepare to devide, the chromosomes coil, thick and separate.

- Each eukaryotic species has different number of chromosomes in the cells.