Microbial Metabolism

Describe the positive result, behind the principle.

• yellow precipitate

• clear solution

• Yellow solution

• white precipitate

Describe the negative result, behind the principle.

• yellow precipitate

• clear solution

• Yellow solution

• white precipitate

Describe the test behind the illustrated principle.

• O-nitrophenylalanin-alpha-D-galactopyranoside test

• O-nitrophenyl-beta-D-galactopyranoside test

• O-nitrophenyl-alpha-D-galactopyranoside test

• O-nitrophenylalanin-beta-D-galactopyranoside test

Lysine Utilization involves _ reaction.

• decarboxylation

• redox

• oxidation

• carboxylation

the image is an example of _ test

• lysine utilization test

• urease test

• onpg test

• nitrate reduction test

Appearance of Red color is a + result from

• Indole Production

• Proskauer Test

• Urease Test

• Hydrogen Sulfide Production

Black coloration is a + result of _ tests

• Indole Production

• Proskauer Test

• Esculin Hydrolysis Test

• Hydrogen Sulfide Production

Green coloration is a - result from _ Test

• Hydrogen sulfide production

• urease test

• citrate utilization

• Phenylalanine deamination

Green coloration is a + result from _ Test

• Hydrogen sulfide production

• urease test

• citrate utilization

• Phenylalanine deamination

This test degrades tryptophan and produces the following products.

• Indole

• pyruvic acid

• ammonia

• Hydrogen

• urease