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11 Cards in this Set

  • Front
  • Back

The nucleus

Most prominent feature of a eukaryotic cell

The Nucleus

The Nucleus

1- nuclear envelope
1a - outer membrane
1b - inner membrane
2 - nucleolus
3 - nucleoplasm
4 - chromation
5 - ribosomes
6 - nuclear pores

1- nuclear envelope


1a - outer membrane


1b - inner membrane


2 - nucleolus


3 - nucleoplasm


4 - chromatin


5 - ribosomes


6 - nuclear pores

nulear envelope..

double membrane structure with pores

nucleoplasm

cytoplasm-like substance


contains chromatin

nucleolus

small spherical body within nucleus

nucleolus manufactures:

  • ribosmal RNA

  • ribosomal subunits (ribosomes)

Nucleus shape/size

  • usually spherical
  • 10-20 um in diameter
Pores size/amount
  • 40-100 nm in diameter
  • around 3000 per nucleus

Pores function:

  • allow material in/out of nucleus
  • spec. mRNA - messenger ribonucleic acid

Nucleus contains..

genetic material of cell (DNA, chromosomes)

Nucleus funtion

Control cell activity through regulation of protein synthesis