Prokaryotic Cell

Question 1

Size compared to eukaryotic cells

Answer 1

Much smaller than eukaryotic

Question 2

Any membrane bound organelles?

Answer 2

No membrane-bound organelles

Question 3

Where is the DNA

Answer 3

DNA found in cytoplasm, arranged into circular chromosome with no free ends-not bound to histone proteins.

Question 4

What are plasmids

Answer 4

Small loops of dna, usually contain relatively small number of genes, contain genes which make bacterium resistant to antibiotics

Question 5

How big are ribosomes

Answer 5

Size 70S (S- how quickly organelles move in a centrifuge)

Question 6

What surrounds the cell

Answer 6

A cell wall-in bacteria-made from peptidoglycan (murien). Cell wall helps maintain structure of cell.-e.g. osmosis

Question 7

What is peptidoglycan

Answer 7

Polymer found between peptides and polysaccharide molecules

Question 8

Where is the slime capsule

Answer 8

On outside of cell wall- help protect bacteria from phagocytosis