Comparing Characteristics Between 3 Domains

Question 1

Nuclear envelope

Answer 1

B - absent
A - absent
E - present

Question 2

Membrane enclosed organelles

Answer 2

B - absent
A - absent
E - present

Question 3

Peptidoglycan cell wall

Answer 3

B - present
A - absent
E - absent

Question 4

Membrane lipids

Answer 4

B - unbranched hydrocarbons
A - some branched hydrocarbons
E - unbranched hydrocarbons

Question 5

Multiple kinds of rna polymerase

Answer 5

B - no
A - yes
E - yes

Question 6

Imitator amino acid for protein synthesis

Answer 6

B - formyl methionine
A - methionine
E - methionine

Question 7

Introns present

Answer 7

B - rare
A - present in some genes
E - present

Question 8

Response to antibiotics (streptomycin and chloramphenicol)

Answer 8

B - growth inhibited
A - growth not inhibited
E - growth not inhibited

Question 9

Histones associated with DNS

Answer 9

B - absent
A - present
E - present

Question 10

Circular chromosome

Answer 10

B - present
A - present
E - absent

Question 11

Ability to grow at temps over 100

Answer 11

B - no
A - some species
E - no

Question 12

Difference in lipids between archaea and bacteria

Answer 12

Glycerol:

• archea: chiral, attached via ether linkages
• bacteria: normal, attached by ester linkages

Hydrocarbon chains

• archea: branched, isoprene
• bacteria: no branched