Portage Learning
4 MAXE · 171 DOIB
★ ★
P A Division of Geneva College
EST. 2012
ONLINE COURSES FOR COLLEGE CREDIT
BIOD 171 Exam 4
E SS E N T I A L M I C R O B I O LO G Y — M E D I A , CU LT U R I N G & I S O L AT I O N
INSTITUTION Portage Learning (Geneva College) PROGRAM Pre-Nursing / Health Sciences
COURSE CODE BIOD 171 COURSE TITLE Essential Microbiology
ACADEMIC YEAR EXAM TITLE BIOD 171 Exam 4
TOTAL QUESTIONS 33 Questions FORMAT Multiple Choice / True-False /
Select All That Apply
EXAMINATION INSTRUCTIONS
▸ Select the single best answer unless "Select all" is specified.
▸ Questions randomized from source material per Component 16.
▸ Topics: Media Types, Agar Plates, Quadrant Streak, Pure Culture, Hemolysis, Selective/Differential
Media.
▸ Correct answers and rationales appear below each question.
, MEDIA, CULTURING & ISOLATION — EXAMINATION 4 Questions 1 – 33
1. True or False: Growth media is best suited for distinguishing between two similar species
of bacteria.
A. True
B. False
CORRECT ANSWER B — False (Growth media supports growth; differential media distinguishes
species)
RATIONALE Growth media is designed to support (not restrict) microbial growth. It does NOT
distinguish between species. Differential media is needed for distinguishing
between similar bacteria.
2. True or False: Differential media is best suited for distinguishing between two similar
species of bacteria.
A. True
B. False
CORRECT ANSWER A — True (Differential media reveals metabolic differences)
RATIONALE Differential media contains indicators that allow researchers to distinguish
between microbes based on biochemical characteristics (e.g., lactose
fermentation).
4 MAXE · 171 DOIB
★ ★
P A Division of Geneva College
EST. 2012
ONLINE COURSES FOR COLLEGE CREDIT
BIOD 171 Exam 4
E SS E N T I A L M I C R O B I O LO G Y — M E D I A , CU LT U R I N G & I S O L AT I O N
INSTITUTION Portage Learning (Geneva College) PROGRAM Pre-Nursing / Health Sciences
COURSE CODE BIOD 171 COURSE TITLE Essential Microbiology
ACADEMIC YEAR EXAM TITLE BIOD 171 Exam 4
TOTAL QUESTIONS 33 Questions FORMAT Multiple Choice / True-False /
Select All That Apply
EXAMINATION INSTRUCTIONS
▸ Select the single best answer unless "Select all" is specified.
▸ Questions randomized from source material per Component 16.
▸ Topics: Media Types, Agar Plates, Quadrant Streak, Pure Culture, Hemolysis, Selective/Differential
Media.
▸ Correct answers and rationales appear below each question.
, MEDIA, CULTURING & ISOLATION — EXAMINATION 4 Questions 1 – 33
1. True or False: Growth media is best suited for distinguishing between two similar species
of bacteria.
A. True
B. False
CORRECT ANSWER B — False (Growth media supports growth; differential media distinguishes
species)
RATIONALE Growth media is designed to support (not restrict) microbial growth. It does NOT
distinguish between species. Differential media is needed for distinguishing
between similar bacteria.
2. True or False: Differential media is best suited for distinguishing between two similar
species of bacteria.
A. True
B. False
CORRECT ANSWER A — True (Differential media reveals metabolic differences)
RATIONALE Differential media contains indicators that allow researchers to distinguish
between microbes based on biochemical characteristics (e.g., lactose
fermentation).
