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17 Cards in this Set

  • Front
  • Back

Organisation of Prokaryotic cells and Eukaryotic cells, do Prokaryotic cells have a nucleus ?

The Answer - No

The 6 ways linear chromosomes are packaged

DANA , Nucleotide , Nucleotide with histones , More scaffolding , Chromosome

What is in a nucleotide

A sugar , a phosphate and a base

Describe the base pairing rule for DNA

A-T , C-G

Why is DNA anti-parallel ?

The anti-parallel structure of DNA is important in DNA replication. The nucleic acid sequence are complimentary and parallel but go in opposite directions .

List three possible functions of non-coding DNA sequences.

Regulation , Protection and Transcription

In Eukaryotes is DNA circular or linear ?

Linear

In Prokaryotic is the DNA linear or circular ?

Circular

Do prokaryotic cells have plasmids ?

Yes

What is a prokaryotic cell?

Unicellular organism that lacks a membrane bound nucleus, a mitochondria and any other membrane bound organelle .

An example of a Prokaryotic cell ?

Bacteria

Example of a Eukaryotic cell ?

Animal cell , plant cell and fungi

Do both Prokaryotic cells and Eukaryotic cells have ribosomes ?

Yes

Do both Prokaryotic cells and Eukaryotic cells have a mitochondria?

No only Eukaryotic cells do

Shape of DNA is described as....

Double helix

Do Eukaryotic cells have plasmids ?

Present in some yeasts ; absent in animal and plant cells.

In the packaging on DNA in Eukaryotic cells

-DNA is wound around histone (their job is to package DNA into structural units called nucleosomes) proteins to form nucleosomes


-the chromatin fibre is founded along a protein scaffold.


-The nucleosomes coil and stack into chromatin fibre


-the folded chromatin fibre is further folded and condenses into a chromosome


- Carbon one = the carbon the base attaches to .