Microbiology Lab Exam 2 PVCC Questions with Answers
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Microbiology Lab PVCC
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Microbiology Lab PVCC
Microbiology Lab Exam 2 PVCC Questions with Answers
Inoculation method? - Answer-broth to broth with loop
Methyl Red Test
Cellular process or capability? - Answer-fermentation
Methyl Red Test
Color of positive test? - Answer-red
Methyl Red Test
What is the end product that is...
Microbiology Lab Exam 2 PVCC
Questions with Answers
Inoculation method? - Answer-broth to broth with loop
Methyl Red Test
Cellular process or capability? - Answer-fermentation
Methyl Red Test
Color of positive test? - Answer-red
Methyl Red Test
What is the end product that is produced when there is a positive test? - Answer-strong
acids --> they are able to overcome the buffer and lower the pH
Methyl Red Test
What is the pH of the media after a positive test? - Answer-<4.4
Methyl Red Test
What is the color of a negative test? - Answer-yellow / orange
Methyl Red Test
What is the end product that is produced when there is a negative test? - Answer-weak
acids --> buffered by the buffer = neutralized
Methyl Red Test
What is the pH of the media after a negative test? - Answer-approximately 7.2
Simmon's Citrate Test
Inoculation method? - Answer-needle streaking the slants
Simmon's Citrate Test
Cellular process or capability? - Answer-looking for an enzyme (citrate permease)
, Simmon's Citrate Test
Color of a positive test? - Answer-blue
Simmon's Citrate Test
What is the pH of a positive test? - Answer-the pH increases, around 8
Simmon's Citrate Test
Color of a negative test? - Answer-green
Simmon's Citrate Test
What is the pH of a negative test? - Answer-6.5-7.2 --> no reaction because it can't use
the nitrogen source
Simmon's Citrate Test
What transporter is involved? - Answer-citrate permease
Eosin Methylene Blue Agar Test
Inoculation method? - Answer-T- streak with loop
Eosin Methylene Blue Agar Test
Cellular process or capability? - Answer-lactose fermentation
Eosin Methylene Blue Agar Test
Selective for? - Answer-gram-negative
Eosin Methylene Blue Agar Test
Differential based on? - Answer-fermentation of the lactose (rate)
Eosin Methylene Blue Agar Test
What are the 4 possible colors of media that can be a result for this test? - Answer-
green metallic sheen
pink
purple
red/agar colored
Eosin Methylene Blue Agar Test
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