Microbiology final groups

Question 1

5 types of Firmicutes (Low G + C and gram positive)?

Answer 1

Lactobacillus - Lactic acid producers, human commensal

Streptococcus - many human pathogens and commensals

Staphylococcus - some human pathogens

Bacilus - endospores and some human pathogens

Clostridium - Anaerobes, endspores and human pathogens

Question 2

3 types of actinobacteria (high G + C and gram positive)?

Answer 2

Actinomyces - Filamentous, branching and some human pathogens

Frankia - symbiotic nitrogen fixers

steptomyces - filamentous and produce antibiotics

Question 3

4 types of alpha Proteobacteria (gram negative)?

Answer 3

Agrobacterium - plant pathogen
Bradyrhizobium - symbiotic nitrogen fixer
Nitrobacter - Nitrifying
Rhizobium - symbiotic Nitrogen fixer

Question 4

1 type of beta Proteobacteria (gram negative)?

Answer 4

Neisseria - human pathogen

Question 5

3 types of gamma (Y) Proteobacteria (gram negative)?

Answer 5

Shigella - human pathogen
Escherichia - human commensal, some pathogens
Salmonella - human pathogen

Question 6

1 type of Delta (δ) Proteobacteria (gram negative)?

Answer 6

Bdellovibrio - uses other bacteria as host

Question 7

2 types of epilson (ε) Proteobacteria (gram negative)?

Answer 7

Campylobacter - human pathogen

Helicobacter - human pathogen