nucleus: information center presenter: oanh le. animal cell (cutaway view of generalized cell)...
TRANSCRIPT
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.