Block E

Question 1

What’s the structural difference between Gram + and Gram - bacteria

Answer 1

Gram - bacteria have the same 3 layers (cytoplasmic membrane, periplasmic space, peptidoglycan) plus 2 layers consisting of periplasmic space and an outer membrane

Question 2

Describe the layers of an Archaea

Answer 2

inside a cytoplasmic membrane, outside semi rigid lattice of sugars, proteins and glycoproteins

Question 3

What’s the name of the Archaea that has a requirement for high salt concentrations

Answer 3

Euryarchaeota

Question 4

What’s the name of the Archaea that produces CH4 (methane)

Answer 4

Methanogenic Archaea

Question 5

What’s the name of the Archaea that likes temperature

Answer 5

Thermoplasmatales

Question 6

What’s the name of the Archaea that are obligate anaerobes and live in extreme temperatures

Answer 6

Crenarchaeota

Question 7

What are 3 features that some archaea use to survive in much higher temperatures

Answer 7

-highly hydrophobic cores
-using DNA gyrase
-high levels of intracellular polyamines