1|Page
PORTAGE LEARNING BIOD 171 FINAL
EXAM ALL QUESTIONS ANDANSWERS
100%CORRECT/VERIFIED
GUARANTEED RATED A+
True or False: A virus is considered a microorganism.
False. Viruses are not living and as such are not considered microorganisms. Virusescan,
however, be classified as microbes, a more general term that includes microorganisms
and viruses.
1.What is the smallest biological unit of life?
A cell.
2.At a generalized level, all cells are comprised of what?
Macromolecules*
*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides butthey
must answer with all four to be fully correct.
1. Which of the following microorganisms are considered to be Eukarya? Select all that
apply.
A. Animalia
B. Plantae
C. Fungi
D. Protista
A,B,C,D
2. Trueof False: All multicellular microorganisms classified as Animalia are
heterotrophic.
True
3.Microorganisms classified as Plantae obtain most of their energy by
converting energy into energy.
Light (sunlight); chemical (sugars)
Define catabolism.
1.
Catabolism is the process of breaking down larger molecules into useful energysources.
2.Upon cellular injury, which metabolic process is involved during the growth and
repair phases of the cell? The anabolic process would be active as it (by definition)is
involved in the building up of small complexes into larger complexes.
1.In phosphorylation, the light reactions always occur where?
The process of converting light energy into chemical energy
(photophosphorylation) always occurs in the membrane.
2.True or False: The Calvin cycle must occur in the absence of light.
False. The term ‘dark reactions’ (also known as the Calvin Cycle) simply denotes the
second stage in photosynthesis—dark reactions do not actually require darkness in order
to occur.
,2|Page
1. Assuming a constant (non-adjustable) light source power, identify the part of the
microscope you would adjust to limit the amount of light entering the microscope.
Select all that apply.
A. Objective
B. Condenser
C. Iris diaphragm
D. Eye piece
C. The iris controls the amount of light that passes through the sample and into the
objective lens. Thus, it can be adjusted (opened or closed) to alter the amount of light.
2.What is the total magnification (relative to your eye) of a sample imaged with a
60x objective and a 10x eyepiece? Show your math.
60 x 10 = 600x magnification
¤
Portage Learning BIOD 171 Final EXAM Questions andAnswers
100%Correct/verified Guaranteed Rated A+ 2025/2026
Portage Learning BIOD 171 Final EXAM Questions andAnswers
100%Correct/verified Guaranteed Rated A+ 2025/2026
1. Identify what type of electron microscope was used to capture the following
image and explain your choice.
The image was captured using a Scanning Electron Microscope (SEM). The above
image shows the trademark ‘shell’ image (no subcellular organelles are visible)
reminiscent of SEM. Only TEM is capable of visualizing subcellular substrucutres.
1.True or False: LB agar is classified as a selective, non-differential media.
False. LB agar is the most basic type of agar and like LB media supports the
growthof virtually all microbes without restriction.
What is agar used for in microbiology?
2.
Agar is used to create a solid, smooth surface on which microbes can grow.
1. True or False. When performing a dilution streak a new (or sterilized) loop is not
,3|Page
required for each phase as long as the bacterial culture is pure.
False.
2. The number of phases (3 vs. 4) and/or the number of times a loop passes througha
previous phase (once vs. multiple times) is acceptable provided what happens? Either
deviation is acceptable in practice provided the resulting gradient contains within
it the growth of individual colonies—if not, the experiment mustbe repeated.
3. True or False. Pathogenic strains of bacteria tend to grow slower than normal
non-pathogenic bacterial strains.
False.
1. Match the following symptoms with their respective diseases:
¤
1. Folliculitis
D
2. Scalded-skin syndrome
E
3. Impetigo
A
4. Conjunctivitis
B
A.
Childhood skin disease near mouth/ nose
B. Infection of thin, transparent scleral tissue
C. Infection occurs at time of birth
D. Pus-filled lesions on skin or hair
¤
5. Ophthalmia Neonatorum C
E. Ruptured pustules; treated with Penicillin
¤
2. True or False. The causative agent of conjunctivitis can be either bacterial or viral.
True.
True or False. There are currently no cures for tetanus.
1.
True.
, 4|Page
2.Identify the medical condition characterized by robust carbohydrate
fermentation under anaerobic conditions, swelling of the infected areas and
fever.
Gas gangrene. The key identifier here is the robust carbohydrate
fermentation, which manifests as intense gas production and swelling—both
trademark conditions of gas gangrene.
3. The alpha-toxin perfringolysin is associated with which medical condition
caused by Gram-positive anaerobic bacteria?
A. Tetanus
B. Botulism
C. Gas gangrene
D. Leprosy
C. Gas gangrene. The bacterium that produces the alpha toxin perfringolysin is
aptly named Clostridium perfringens.
The envelope surrounds the
1. of some viruses.
Capsid.
2. True
or False. You would expect to see a viral envelope on a virus infecting a
bacterial cell.
False
3. Rank the following viruses based on their size from largest to smallest:
Paramyxov
irus
Poliovirus
Smallpox
virus
Smallpox (~200nm) > Paramyxovirus (100-150nm) > Poliovirus (~30nm)
1.What linear, double-stranded, enveloped DNA virus is the first virus (as of Oct.
26, 1977) to be officially declared eradicated?
Smallpox (Variola virus). Although once a major cause of death in the world, a
smallpox vaccine was developed in 1796 by Edward Jenner. Global vaccination efforts
have prevented smallpox from appearing in humans since October 26, 1977,making
smallpox the first infectious disease ever to be eradicated.
2.What small (~30nm) single-stranded, non-enveloped RNA virus targets the CNS
(central nervous system), causing potentially catastrophic damage to motor
neurons?
Polio, also known as poliomyelitis.
3.By whom and where was the first Polio vaccine developed?
Jonas Salk and his research team developed the polio vaccine at the University of
Pittsburgh in 1955.
Which subtype of Influenza is the
4.
most virulent? Influenza A.
Module 1 Exam
Exam Page 1
PORTAGE LEARNING BIOD 171 FINAL
EXAM ALL QUESTIONS ANDANSWERS
100%CORRECT/VERIFIED
GUARANTEED RATED A+
True or False: A virus is considered a microorganism.
False. Viruses are not living and as such are not considered microorganisms. Virusescan,
however, be classified as microbes, a more general term that includes microorganisms
and viruses.
1.What is the smallest biological unit of life?
A cell.
2.At a generalized level, all cells are comprised of what?
Macromolecules*
*A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides butthey
must answer with all four to be fully correct.
1. Which of the following microorganisms are considered to be Eukarya? Select all that
apply.
A. Animalia
B. Plantae
C. Fungi
D. Protista
A,B,C,D
2. Trueof False: All multicellular microorganisms classified as Animalia are
heterotrophic.
True
3.Microorganisms classified as Plantae obtain most of their energy by
converting energy into energy.
Light (sunlight); chemical (sugars)
Define catabolism.
1.
Catabolism is the process of breaking down larger molecules into useful energysources.
2.Upon cellular injury, which metabolic process is involved during the growth and
repair phases of the cell? The anabolic process would be active as it (by definition)is
involved in the building up of small complexes into larger complexes.
1.In phosphorylation, the light reactions always occur where?
The process of converting light energy into chemical energy
(photophosphorylation) always occurs in the membrane.
2.True or False: The Calvin cycle must occur in the absence of light.
False. The term ‘dark reactions’ (also known as the Calvin Cycle) simply denotes the
second stage in photosynthesis—dark reactions do not actually require darkness in order
to occur.
,2|Page
1. Assuming a constant (non-adjustable) light source power, identify the part of the
microscope you would adjust to limit the amount of light entering the microscope.
Select all that apply.
A. Objective
B. Condenser
C. Iris diaphragm
D. Eye piece
C. The iris controls the amount of light that passes through the sample and into the
objective lens. Thus, it can be adjusted (opened or closed) to alter the amount of light.
2.What is the total magnification (relative to your eye) of a sample imaged with a
60x objective and a 10x eyepiece? Show your math.
60 x 10 = 600x magnification
¤
Portage Learning BIOD 171 Final EXAM Questions andAnswers
100%Correct/verified Guaranteed Rated A+ 2025/2026
Portage Learning BIOD 171 Final EXAM Questions andAnswers
100%Correct/verified Guaranteed Rated A+ 2025/2026
1. Identify what type of electron microscope was used to capture the following
image and explain your choice.
The image was captured using a Scanning Electron Microscope (SEM). The above
image shows the trademark ‘shell’ image (no subcellular organelles are visible)
reminiscent of SEM. Only TEM is capable of visualizing subcellular substrucutres.
1.True or False: LB agar is classified as a selective, non-differential media.
False. LB agar is the most basic type of agar and like LB media supports the
growthof virtually all microbes without restriction.
What is agar used for in microbiology?
2.
Agar is used to create a solid, smooth surface on which microbes can grow.
1. True or False. When performing a dilution streak a new (or sterilized) loop is not
,3|Page
required for each phase as long as the bacterial culture is pure.
False.
2. The number of phases (3 vs. 4) and/or the number of times a loop passes througha
previous phase (once vs. multiple times) is acceptable provided what happens? Either
deviation is acceptable in practice provided the resulting gradient contains within
it the growth of individual colonies—if not, the experiment mustbe repeated.
3. True or False. Pathogenic strains of bacteria tend to grow slower than normal
non-pathogenic bacterial strains.
False.
1. Match the following symptoms with their respective diseases:
¤
1. Folliculitis
D
2. Scalded-skin syndrome
E
3. Impetigo
A
4. Conjunctivitis
B
A.
Childhood skin disease near mouth/ nose
B. Infection of thin, transparent scleral tissue
C. Infection occurs at time of birth
D. Pus-filled lesions on skin or hair
¤
5. Ophthalmia Neonatorum C
E. Ruptured pustules; treated with Penicillin
¤
2. True or False. The causative agent of conjunctivitis can be either bacterial or viral.
True.
True or False. There are currently no cures for tetanus.
1.
True.
, 4|Page
2.Identify the medical condition characterized by robust carbohydrate
fermentation under anaerobic conditions, swelling of the infected areas and
fever.
Gas gangrene. The key identifier here is the robust carbohydrate
fermentation, which manifests as intense gas production and swelling—both
trademark conditions of gas gangrene.
3. The alpha-toxin perfringolysin is associated with which medical condition
caused by Gram-positive anaerobic bacteria?
A. Tetanus
B. Botulism
C. Gas gangrene
D. Leprosy
C. Gas gangrene. The bacterium that produces the alpha toxin perfringolysin is
aptly named Clostridium perfringens.
The envelope surrounds the
1. of some viruses.
Capsid.
2. True
or False. You would expect to see a viral envelope on a virus infecting a
bacterial cell.
False
3. Rank the following viruses based on their size from largest to smallest:
Paramyxov
irus
Poliovirus
Smallpox
virus
Smallpox (~200nm) > Paramyxovirus (100-150nm) > Poliovirus (~30nm)
1.What linear, double-stranded, enveloped DNA virus is the first virus (as of Oct.
26, 1977) to be officially declared eradicated?
Smallpox (Variola virus). Although once a major cause of death in the world, a
smallpox vaccine was developed in 1796 by Edward Jenner. Global vaccination efforts
have prevented smallpox from appearing in humans since October 26, 1977,making
smallpox the first infectious disease ever to be eradicated.
2.What small (~30nm) single-stranded, non-enveloped RNA virus targets the CNS
(central nervous system), causing potentially catastrophic damage to motor
neurons?
Polio, also known as poliomyelitis.
3.By whom and where was the first Polio vaccine developed?
Jonas Salk and his research team developed the polio vaccine at the University of
Pittsburgh in 1955.
Which subtype of Influenza is the
4.
most virulent? Influenza A.
Module 1 Exam
Exam Page 1
