Portage Learning| BIOL 271 Microbiology W/ Lab
Final Exam; Latest Questions With Verified Answers
Institution: Portage Learning
Course Code: BIOL 271
Course Title: Microbiology W/ Lab
Exam: Final Exam
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain/Describe/ Identification
➢ Fill In The Blank
➢ Short Answer
All The Best!!
, Final Exam
Question 1.
Identify The Following Disease. Red Spot On Skin Picture.
A. Lyme Disease
B. Anthrax
C. Tetanus
D. Shingles
ANS. A.
Explanation: The Red Spot/Rash Shown Is Characteristic Of Lyme Disease.
Question 2.
Identify The Following Disease. Black Center
A. Lyme Disease
B. Anthrax
,C. Tetanus
D. Gas Gangrene
ANS. B.
Explanation: Anthrax Can Produce A Characteristic Black-Centered Lesion Called An
Eschar.
Question 3.
True Or False. Chlyamida Is An Obligate Parasite And As Such Can Be Grown On Agar
Plates Alone.
A. True
B. False
ANS. B.
Explanation: Chlamydia Is An Obligate Intracellular Organism And Requires Living
Host Cells For Growth.
Question 4.
When Performing A Dilution Streak A New Loop Must Be Used For Each Phase.
A. True
B. False
ANS. A.
Explanation: A New Loop Is Required For Each Phase To Progressively Dilute The
Bacterial Population.
Question 5.
In Order To Encourage Growth Of A Slow Growing Microbe What Might A Researcher
Do During A Phase Dilution Streak>
A. A Research May Either Opt To Perform A 3 Phase Dilution Streak Or Pass The Loop
Through The Previous Phase Multiple Times.
B. A Researcher May Eliminate The Dilution Phases Completely.
C. A Researcher May Increase The Dilution Between Every Phase.
D. A Researcher May Immediately Discard The Previous Phase.
, ANS. A.
Explanation: These Approaches Allow More Organisms To Be Transferred Into
Subsequent Phases, Helping Recover Slow-Growing Microbes.
Question 6.
A Loop Can Pass Through A Previous Phase Multiple Times If:
A. The Gradient Has The Growth Of Individual Colonies.
B. The Plate Contains No Bacterial Growth.
C. The Sample Has Been Completely Diluted.
D. The Incubator Temperature Has Been Lowered.
ANS. A.
Explanation: Passing Through The Previous Phase Multiple Times Can Be Used When
Individual Colonies Are Present Along The Gradient.
Question 7.
To Restrict The Growth Of A Pathogenic Microbe A Researcher Might Decrease An
Incubator From 37ºc To 25ºc.
A. True
B. False
ANS. A.
Explanation: Lowering The Incubation Temperature Can Restrict Growth When The
Pathogen Grows Better At Approximately 37ºc.
Question 8.
When Given An Unknowin Bacterial Sample The First Step Is To Expand The Current
Bacterial Population. Which Form Of Media Supports This Need And Why?
A. LB Media Is The Best Because All Other Options Are Selective Media And Might
Potentially Inhibit The Growth Of The Unknown Sample.
B. Selective Media Is The Best Because It Inhibits All Bacterial Growth.
C. Differential Media Is The Best Because It Prevents Population Expansion.
D. Enriched Media Is The Best Because It Eliminates The Unknown Organisms.
Final Exam; Latest Questions With Verified Answers
Institution: Portage Learning
Course Code: BIOL 271
Course Title: Microbiology W/ Lab
Exam: Final Exam
Assessment Type: Examination
Edition: Updated Version
Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________
Instructions:
Answer All Questions.
Choose The Correct Answer
QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain/Describe/ Identification
➢ Fill In The Blank
➢ Short Answer
All The Best!!
, Final Exam
Question 1.
Identify The Following Disease. Red Spot On Skin Picture.
A. Lyme Disease
B. Anthrax
C. Tetanus
D. Shingles
ANS. A.
Explanation: The Red Spot/Rash Shown Is Characteristic Of Lyme Disease.
Question 2.
Identify The Following Disease. Black Center
A. Lyme Disease
B. Anthrax
,C. Tetanus
D. Gas Gangrene
ANS. B.
Explanation: Anthrax Can Produce A Characteristic Black-Centered Lesion Called An
Eschar.
Question 3.
True Or False. Chlyamida Is An Obligate Parasite And As Such Can Be Grown On Agar
Plates Alone.
A. True
B. False
ANS. B.
Explanation: Chlamydia Is An Obligate Intracellular Organism And Requires Living
Host Cells For Growth.
Question 4.
When Performing A Dilution Streak A New Loop Must Be Used For Each Phase.
A. True
B. False
ANS. A.
Explanation: A New Loop Is Required For Each Phase To Progressively Dilute The
Bacterial Population.
Question 5.
In Order To Encourage Growth Of A Slow Growing Microbe What Might A Researcher
Do During A Phase Dilution Streak>
A. A Research May Either Opt To Perform A 3 Phase Dilution Streak Or Pass The Loop
Through The Previous Phase Multiple Times.
B. A Researcher May Eliminate The Dilution Phases Completely.
C. A Researcher May Increase The Dilution Between Every Phase.
D. A Researcher May Immediately Discard The Previous Phase.
, ANS. A.
Explanation: These Approaches Allow More Organisms To Be Transferred Into
Subsequent Phases, Helping Recover Slow-Growing Microbes.
Question 6.
A Loop Can Pass Through A Previous Phase Multiple Times If:
A. The Gradient Has The Growth Of Individual Colonies.
B. The Plate Contains No Bacterial Growth.
C. The Sample Has Been Completely Diluted.
D. The Incubator Temperature Has Been Lowered.
ANS. A.
Explanation: Passing Through The Previous Phase Multiple Times Can Be Used When
Individual Colonies Are Present Along The Gradient.
Question 7.
To Restrict The Growth Of A Pathogenic Microbe A Researcher Might Decrease An
Incubator From 37ºc To 25ºc.
A. True
B. False
ANS. A.
Explanation: Lowering The Incubation Temperature Can Restrict Growth When The
Pathogen Grows Better At Approximately 37ºc.
Question 8.
When Given An Unknowin Bacterial Sample The First Step Is To Expand The Current
Bacterial Population. Which Form Of Media Supports This Need And Why?
A. LB Media Is The Best Because All Other Options Are Selective Media And Might
Potentially Inhibit The Growth Of The Unknown Sample.
B. Selective Media Is The Best Because It Inhibits All Bacterial Growth.
C. Differential Media Is The Best Because It Prevents Population Expansion.
D. Enriched Media Is The Best Because It Eliminates The Unknown Organisms.
