Describe the structure and function of the nucleus

Describe the structure and function of the nucleus.

assembly of small and large ribosomal subunits. Singular is
nucleolus.
- Genes: hereditary units, control cellular structure and
direct cellular activities
- Chromatin: The threadlike mass of genetic material,
consisting of DNA and histone proteins, that is present in
the nucleus of a nondividing or interphase cell.
- Genome: total genetic info carried in a cell or organism
- Nucleosome: Structural subunit of a chromosome
consisting of histones and DNA.
- Chromatids: One of a pair of identical connected
nucleoprotein strands that are joined at the centromere
and separate during cell division, each becoming a
chromosome of one of the two daughter cells.
Look at table 3.2
Describe the sequence of events that occurs in protein synthesis.
Protein synthesis
Proteome: All of an organisms proteins
Gene expression: In the process a gene's DNA is used as a template
for synthesis of a specific protein
1. Transcription: the info encoded in a specific region of DNA is
transcribed to product a specific molecule of RNA (The
process of copying the information represented by the
sequence of base triplets in DNA into a complementary
sequence of codons.)
2. Translation: The RNA attaches to a ribosome, where the info
contained in the RNA is translated into a corresponding
sequence of amino acids to form a new protein molecule

Discuss the stages, events and significance of somatic and
reproductive cell division.