Mycobacterium

Question 1

True or False, Mycobacterium is strictly aerobic, non-spore forming, and Gram (-)

Answer 1

False, it is Gram (+), everything else is correct

Question 2

Classification of Mycobacterium genus based on growth rate and genus

Answer 2

Runyon’s classification

Question 3

What group of Runyon’s classification is characterized by slow growth and produces yellow pigment when exposed to light

Answer 3

Group I - Photochromogenic Strains

Question 4

What group of Runyon’s classification produces skin ulcers, and pulmonary diseases in Humans

Answer 4

Group I - Photochromogenic Strains

Question 5

What group of Runyon’s classification is characterized by orange-yellow pigment and is considered Saphrophytic

Answer 5

Group II - Scotochromogenic Strains

Question 6

What group of Runyon’s classification does not produce any pigments

Answer 6

Group III - Non-chromogenic Strains

Question 7

2 Mycobacterium species that are zoonotic

Answer 7

M. bovis & M. avium

Question 8

What are the components of lipids of Mycobacterium

Answer 8

Mycolic Acid, Trehalose 6, 6 dimycolate

Question 9

What group of Runyon’s classification are rapid growers and matures in less than 1 week

Answer 9

Group IV

Question 10

What substance inhibits the growth of Mycobacterium in a media

Answer 10

Glycerol

Question 11

True or False, mycobacterium spp. are resistant to acids, disinfectants, antibodies, and dessication

Answer 11

True

Question 12

What is the most frequently used media incorporated w/ egg yolk

Answer 12

Dorset’s and Stonebrink’s