Microbiology BIOD 171 Module 2 Exam
PORTAGE LEARNING WITH ACTUAL AND
RELEVANT ANSWERS 2025
A virus that infects bacteria is called a [answer1] and contains a [answer2] -sided
polygon capsid. - CORRECT ANSWER--1. Bacteriophage
2. 20
True or False. Structurally, bacteriophages are similar to viruses that infect animals. -
CORRECT ANSWER--False. Bacteriophages have a distinct composition and structure.
Identify the following components of a bacteriophage. - CORRECT ANSWER--1-Capsid
2- Collar
3- Tail
4- Base plate
5- Tail fibers
Describe the main differences between lytic and temperate phages. - CORRECT
ANSWER--- Lytic bacteriophages REPLICATE within the host bacteria until it
ruptures/dies
- Temperate phages do NOT REPLICATE and do not kill the host cell
Based on the following image, would you expect the viral titer to be high or low? Why? -
CORRECT ANSWER--Low.
clarity "turbity" is low which indicates that there's a high number of intact bacterial cells
present in the media and therefore the amount of virus contained is low.
Which of the following cannot be spread via airborne particles:
Measles, Mumps, Rubella? - CORRECT ANSWER--None: Measles, mumps and rubella
can all be spread via airborne particles formed while coughing, sneezing, etc.
, True or False. A patient infected with rubella is considered infectious one week before
and after the appearance of the trademark rash. - CORRECT ANSWER--True
A patient diagnosed with German measles may additionally experience what disease?
Select all that apply. - CORRECT ANSWER--Conjunctivitis and influenza like symptoms
Which of the following diseases does a linear, single-stranded RNA virus cause?
Measles, Mumps, Rubella - CORRECT ANSWER--All of the above:
Measles, mumps and rubella are all linear, single-stranded RNA viruses.
What disease displays as a secondary characteristic swelling of the testes/ovaries and
pancreas? - CORRECT ANSWER--Mumps. Primary swelling in the salivary gland in
neck and secondary swelling in the testes/ovaries and pancreas.
You go to visit a friend who has chickenpox. While visiting what are 2 things you will be
sure to avoid so that you don't also become infected? - CORRECT ANSWER--1) keep a
distance if your friend is coughing or sneezing: chickenpox transmitted through airborne
droplets
2. avoid direct contact with blisters of an infected individual.
True or False. The development of shingles is most often seen in an older adult
population (> 60 years old). - CORRECT ANSWER--True: The most common age for
VZV reactivation and shingle diagnosis tends to occur in people around 60 years of age.
True or False. Unlike chickenpox, the blisters that appear with shingles are localized
and limited to small areas. - CORRECT ANSWER--True: While chickenpox blisters
often cover the en!re body, the blisters associated with shingles are localized and
limited to small areas.
A person who has never had chickenpox nor administered the VZV/shingles vaccine is
exposed to someone with an active VZV (shingles) outbreak and becomes infected.
Explain why (or why not) the person will only develop shingles. - CORRECT ANSWER--
The infected individual will NOT develop shingles but WILL develop chickenpox
- Unvaccinated and unexposed individuals first develop chickenpox because shingles is
the reactivation of the dormant VZV virus from the chickenpox infection.
What linear, double-stranded, enveloped DNA virus is the first virus (as of Oct. 26,
1977) to be officially declared eradicated? - CORRECT ANSWER--Smallpox (Variola
virus).
What small (~30nm) single-stranded, non-enveloped RNA virus targets the CNS,
causing potentially catastrophic damage to motor neurons? - CORRECT ANSWER--
Polio, also known as poliomyelitis.
PORTAGE LEARNING WITH ACTUAL AND
RELEVANT ANSWERS 2025
A virus that infects bacteria is called a [answer1] and contains a [answer2] -sided
polygon capsid. - CORRECT ANSWER--1. Bacteriophage
2. 20
True or False. Structurally, bacteriophages are similar to viruses that infect animals. -
CORRECT ANSWER--False. Bacteriophages have a distinct composition and structure.
Identify the following components of a bacteriophage. - CORRECT ANSWER--1-Capsid
2- Collar
3- Tail
4- Base plate
5- Tail fibers
Describe the main differences between lytic and temperate phages. - CORRECT
ANSWER--- Lytic bacteriophages REPLICATE within the host bacteria until it
ruptures/dies
- Temperate phages do NOT REPLICATE and do not kill the host cell
Based on the following image, would you expect the viral titer to be high or low? Why? -
CORRECT ANSWER--Low.
clarity "turbity" is low which indicates that there's a high number of intact bacterial cells
present in the media and therefore the amount of virus contained is low.
Which of the following cannot be spread via airborne particles:
Measles, Mumps, Rubella? - CORRECT ANSWER--None: Measles, mumps and rubella
can all be spread via airborne particles formed while coughing, sneezing, etc.
, True or False. A patient infected with rubella is considered infectious one week before
and after the appearance of the trademark rash. - CORRECT ANSWER--True
A patient diagnosed with German measles may additionally experience what disease?
Select all that apply. - CORRECT ANSWER--Conjunctivitis and influenza like symptoms
Which of the following diseases does a linear, single-stranded RNA virus cause?
Measles, Mumps, Rubella - CORRECT ANSWER--All of the above:
Measles, mumps and rubella are all linear, single-stranded RNA viruses.
What disease displays as a secondary characteristic swelling of the testes/ovaries and
pancreas? - CORRECT ANSWER--Mumps. Primary swelling in the salivary gland in
neck and secondary swelling in the testes/ovaries and pancreas.
You go to visit a friend who has chickenpox. While visiting what are 2 things you will be
sure to avoid so that you don't also become infected? - CORRECT ANSWER--1) keep a
distance if your friend is coughing or sneezing: chickenpox transmitted through airborne
droplets
2. avoid direct contact with blisters of an infected individual.
True or False. The development of shingles is most often seen in an older adult
population (> 60 years old). - CORRECT ANSWER--True: The most common age for
VZV reactivation and shingle diagnosis tends to occur in people around 60 years of age.
True or False. Unlike chickenpox, the blisters that appear with shingles are localized
and limited to small areas. - CORRECT ANSWER--True: While chickenpox blisters
often cover the en!re body, the blisters associated with shingles are localized and
limited to small areas.
A person who has never had chickenpox nor administered the VZV/shingles vaccine is
exposed to someone with an active VZV (shingles) outbreak and becomes infected.
Explain why (or why not) the person will only develop shingles. - CORRECT ANSWER--
The infected individual will NOT develop shingles but WILL develop chickenpox
- Unvaccinated and unexposed individuals first develop chickenpox because shingles is
the reactivation of the dormant VZV virus from the chickenpox infection.
What linear, double-stranded, enveloped DNA virus is the first virus (as of Oct. 26,
1977) to be officially declared eradicated? - CORRECT ANSWER--Smallpox (Variola
virus).
What small (~30nm) single-stranded, non-enveloped RNA virus targets the CNS,
causing potentially catastrophic damage to motor neurons? - CORRECT ANSWER--
Polio, also known as poliomyelitis.
