Archaea

Question 1

Tiers of Taxonomy

Answer 1

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species 

Dumb King Phillip Came Over For Great Soil

Question 2

Differences Between Archaea/Archaebacteria amd Bacteria

Answer 2

Prokaryotes that can’t be classified as bacteria

• Archael cell walls contain various polysaccharides, not peptidoglycans

Phospholipids in PM differ from bacteria and eukaryotes (have branches HC chains)

Question 3

Similarities Between Archaea and Eukaryotes

Answer 3

Have histone that package DNA (bacteria has no histones)

Ribosomes not inhibited by antibodies in eukaryotes or in archae (but is inhibited in bacteria)

Question 4

Mathanogens

Answer 4

Obligate anaerobes (can’t live in oxygen)

Live in mud, guts of animals and produce methane

Fix C in CO2 using energy from H2 to produce methane

Question 5

Extremophiles

Answer 5

Halophiles and thermophiles

Some also live in high/low pH or high pressure environments

Question 6

Halophiles

Answer 6

Live in high concentrations of salt (i.e. dead sea, salty food)

Can be aerobic heterotrophs, or anaerobic autotrophs (photosynthetic)
- Uses the pigment bacteriorhodopsin

Question 7

Thermophiles

Answer 7

Live in high heat

Sulfur based chemoautotrophs

Question 8

Chemolithoautorophs

Answer 8

Non-photosynthetic archaea that fixes CO2 by oxidizing ammonia

Question 9

Organotrophs

Answer 9

Electrons obtained from organic compounds

Question 10

Lithotrophs

Answer 10

Electrons obtained from inorganic compounds