DNA Packaging in Prokaryotes and Eukaryotes

What is a Prokaryote?

A cell without a nucleus.

What is a Eukaryote?

A Cell with a nucleus

All Eukaryotic cells contain DNA in?

The Nucleus & Mitochondria

Eukaryotic cells DNA in a nucleus is packaged as?

A Linear chromosome that is tightly coiled and associated with proteins.

Eukaryotic cells DNA in the mitrochondria is packaged as?

Circular Chromosomes

What are some examples of Eukaryotic cells?

Animals, Plants and Fungi

What are some examples of Prokaryotic cells?

E. Coli

How is DNA packaged in a Prokaryotic cell?

single double stranded circular chromosome molecule

What else may a prokaryotic cell have?

A second chromosome which can carry extra non-essential genes - this is known as a plasmid.

Where is the mitochondrial dna?

The Cytoplasm

where is the genetic material store for eukaryotes?

In the nucleus

What is the DNA Double Helix wrapped around and what does it form?

The DNA is wrapped around a Histone protein which alltogether forms a nucleosome.

What is the name given to a combination of nucleosomes?

A chromatin

These bundles of nucleosomes bind together to form a long thick bundle known as a what?

Thinck chromatin fibre

This thick chromatin fibre keeps condensing and folding to produce a …?

Condensed Chromosome.

As the condensed chromosome folds it forms a …?

Chromosome!

What is the process of Super Coiling?

Super-coiling is the name given to the process by which a cell managed to fit i all of its DNA