BIOD 171 Microbiology Module 4 Exam |
2025 Actual Exam | Portage Learning, Exams
of Biology
T/F: Growth media is best suited for distinguishing between tw
c c c c c c c c c
o similar species of bacteria ......answer.....False
c c c c cc
growth media is designed to simply support (and not restrict)
c c c c c c c c c c
microbial growth c
,A researcher is asked to determine which of two vials contains
c c c c c c c c c c c
E coli and which contains salmonella. Knowing both are Gram-
c c c c c c c c c
negative while only one of them is capable of fermenting lactos
c c c c c c c c c c
e, which type of media would be best suited? ......answer.....Diff
c c c c c c c c cc
erential media c
What are the requirements of a fastidious microbe? ......answer
c c c c c c c cc
.....A fastidious microbe is an organism with complex growth re
c c c c c c c c c
quirements and will not grow without then. Enriched medias t
c c c c c c c c c
hus contain these specific and essential nutrients required for t
c c c c c c c c c
he growth of a particular subset of microorganisms.
c c c c c c c
T/F: LB agar is classified as a non-selective, non-
c c c c c c c c
differential media ......answer.....True c cc
,The polysaccharide-
c
based hardening agent added to LB media to produce LB agar is
c c c c c c c c c c c c
derived from what? ......answer.....Seaweed extract
c c cc c
Blood agar is which type of medium? Select all that apply:
c c c c c c c c c c
- Selective and Differential
c c c
- Enriched
c
- Differential
c
- Selective ......answer.....- Enriched
c cc c
- Differential
c
Match the following hemolytic class with its description of acti
c c c c c c c c c
vity: c
1. Alpha hemolysis
c c
, 2. Beta hemolysis
c c
3. Gamma hemolysis
c c
A. No change
c c
B. Greenish-brown color
c c
C. Distinct zone of clearing ......answer.....1. Alpha hemolysis-
c c c c cc c c
Greenish-brown color (B)
c c c
2. Beta hemolysis- Distinct zone of clearing (C)
c c c c c c c
3. Gamma hemolysis- No change (A)
c c c c c
Match the following hemolytic class with its description of acti
c c c c c c c c c
vity: c
1. Alpha hemolysis
c c
2025 Actual Exam | Portage Learning, Exams
of Biology
T/F: Growth media is best suited for distinguishing between tw
c c c c c c c c c
o similar species of bacteria ......answer.....False
c c c c cc
growth media is designed to simply support (and not restrict)
c c c c c c c c c c
microbial growth c
,A researcher is asked to determine which of two vials contains
c c c c c c c c c c c
E coli and which contains salmonella. Knowing both are Gram-
c c c c c c c c c
negative while only one of them is capable of fermenting lactos
c c c c c c c c c c
e, which type of media would be best suited? ......answer.....Diff
c c c c c c c c cc
erential media c
What are the requirements of a fastidious microbe? ......answer
c c c c c c c cc
.....A fastidious microbe is an organism with complex growth re
c c c c c c c c c
quirements and will not grow without then. Enriched medias t
c c c c c c c c c
hus contain these specific and essential nutrients required for t
c c c c c c c c c
he growth of a particular subset of microorganisms.
c c c c c c c
T/F: LB agar is classified as a non-selective, non-
c c c c c c c c
differential media ......answer.....True c cc
,The polysaccharide-
c
based hardening agent added to LB media to produce LB agar is
c c c c c c c c c c c c
derived from what? ......answer.....Seaweed extract
c c cc c
Blood agar is which type of medium? Select all that apply:
c c c c c c c c c c
- Selective and Differential
c c c
- Enriched
c
- Differential
c
- Selective ......answer.....- Enriched
c cc c
- Differential
c
Match the following hemolytic class with its description of acti
c c c c c c c c c
vity: c
1. Alpha hemolysis
c c
, 2. Beta hemolysis
c c
3. Gamma hemolysis
c c
A. No change
c c
B. Greenish-brown color
c c
C. Distinct zone of clearing ......answer.....1. Alpha hemolysis-
c c c c cc c c
Greenish-brown color (B)
c c c
2. Beta hemolysis- Distinct zone of clearing (C)
c c c c c c c
3. Gamma hemolysis- No change (A)
c c c c c
Match the following hemolytic class with its description of acti
c c c c c c c c c
vity: c
1. Alpha hemolysis
c c
