High G+ C

Question 1

Phylum actinobacteria

Answer 1

Morphology: bacillus to coccobacilli
Aerobic
Genera:
1) actinomyces - helps in nutrient cycling in soil
actinomyces Israelii - causes endocarditis
2) mycobacterium - have mycolic acid in cell wall
mycobacterium tuberculosis; mycobacterium leprae - leprosy
3) corynebacterium - form v stapes called palisades;usually not pathogenic
corynebacterium diphtheria-causes diphtheria
4) bifidobacterium _ present in gut, probiotics and yogurt
5) propionibacterium - propionitacterium acnes - causes acne’s
6) streptomycin - found in soil; more than 500 species; over 2/3 antibiotics were found in this genus