Lecture 2

Question 1

Differences between gram negative and gram positive bacteria

Answer 1

Gram negative:
stain pink
2 layered wall
Wavy
Thin proteoglycan wall - susceptible 
High lipoprotein content 
Lipopolysaccharide

Question 2

Limitations to gram staining

Answer 2

No of microorganisms required is high

Centrifugation required in liquid samples

Question 3

Differences between eukaryotic and prokaryotic cells

Answer 3

Eukaryotic
Membrane bound organelles 
Nucleus
Multiple chromosomes 
No plasmids 
No cell wall