RHABDOVIRIDAE, CALICIVIRIDAE AND ASTROVIRIDAE QUIZ

Oospora Crustacea

Oospora caseovorans

Oospora aurianticum

none of these

None of these

Streptococcus thermophilics

Lactobacillus bulgaricus

Lactobacillus acidophilus

none of these

gas forming, aerobic spore formers

both (a) and (b)

gas forming, anaerobic spore formers

brownish color to bluish gray in milk in its pure form

bluish gray to brownish color in milk in its pure form

gray to brownish color in milk

yellow color in milk

P. fragi

Aeromonas hydrophila

Pseudomonas synxantha

P. mephitica

All of these

stringiness caused by mastitis and in particular by fibrin and leucocytes from the cow's blood.

stringiness due to thin films of casein or lactalbumin during cooling

sliminess resulting from the thickness of the cream

worse at the bottom of the milk

worse at the middle of the milk

all of these

worse near the top of the milk

slimy capsular material from the cells usually proteins

slimy capsular material from the cells usually gums or mucins

slimy capsular material from the cells usually lipids

All of these

both (a) and (b)

Pseudomonas syncyanea

S. marcescens

Pseudomonas synxantha

Streptococcus thermophilus

S. cremoris

mixed culture of (a) and (b)

Lactobacillus bulgaricus