Litmus milk test

Question 1

litmus milk test differentiates microorganisms based on various metabolic reactions whether the bacteria is capable of ___

Answer 1

• fermentation
• reduction
• clot formation
• digestion
• formation of gas

Question 2

litmus pink used to grow?

Answer 2

lactic acid bacteria

Question 3

pink color indicates

Answer 3

pink as a result of acid production

Question 5

if too much acid is produced casein in the milk is __, solidifying the milk

Answer 5

coagulated

Question 6

with some organisms, the curd ___ and whey is ___

Answer 6

curd = shrinks
whey = formed at the surface

Question 7

straw colored resembling turbid serum is caused by __

Answer 7

casein hydrolyze

Question 8

medium becomes colorless in the bottom of the tube indicates?

Answer 8

organism was able to reduce litmus

Question 9

if the pH changes to acid, turning color pink, what you will record?

Answer 9

acid

Question 10

pink, mauve indicates

Answer 10

acid

Question 11

alkaline color indication

Answer 11

blue

Question 12

purple indicates?

Answer 12

no changes

Question 13

white indicates?

what you will record?

Answer 13

• there is reduction of the indicator
• decolorized

Question 14

presence of clot (coagulation) in the milk is recorded as?

Answer 14

clot formation

Question 15

dissolution of clot with clear, grayish, watery fluid, and a shrunken insoluble pink color is recorded as?

Answer 15

digestion

Question 16

dissolution of clot and the color is blue is recorded as?

Answer 16

peptonization

Question 17

QC sample organism for fermentation

Answer 17

Clostridium perfringens

Question 18

c. perfringes produces __ fermentation

Answer 18

stormy fermentation due to intense gas production

Question 19

QC sample organism for acid formation

Answer 19

Lactobacillus acidophilus

Question 20

Lactobacillus acidophilus is for?

Answer 20

clot formation

Question 21

peptonization sample organism

Answer 21

Pseudomonas aeruginosa

Question 22

P. aeruginosa is for?

Answer 22

clearing

Question 23

ATCC13124

Answer 23

C. perfringens

Question 24

ATCC11506

Answer 24

L. acidophilus

Question 25

ATCC27853

Answer 25

P. aeruginosa

Question 26

peptonization color indication

Answer 26

straw colored

Question 27

e. coli is associated with?

Answer 27

fermentation - acid production

Question 28

klebsiella is associated with

Answer 28

acid production with the clot formation

Question 29

p. aeruginosa is associated with

Answer 29

alkaline production