BIOD 171 Final Exam Questions (2nd Version) | Actual
Exam Questions & 100% Correct Answers | Latest Update
2026 | Biology Exam Prep
1. Left untreated, three percent of cases of Streptococcal pharyngitis will
progress to which of the following?
Klebsiella pneumonia
Laryngitis
Conjunctivitis
Rheumatic fever
2. Which organelle is primarily responsible for protein synthesis in eukaryotic
cells?
Endoplasmic Reticulum
Lysosomes
Nucleus
Chloroplasts
3. Which strain of coronavirus was responsible for the 2003 epidemic?
MERS
SARS
4. Explain how the life cycles of lytic and temperate phages differ in terms of
their interaction with host cells.
Lytic phages do not require a host cell, while temperate phages do.
Lytic phages immediately take over the host's machinery to
replicate and cause cell lysis, while temperate phages can enter a
, lysogenic cycle, integrating their DNA into the host's genome and
remaining dormant.
Lytic phages replicate slowly, while temperate phages replicate
quickly.
Lytic phages can only infect specific strains of bacteria, while
temperate phages can infect a wider range.
5. If a new bacterial strain is found to be Gram-negative, what implications does
this have for treatment options?
It will be easier to culture in the lab.
It may be more resistant to certain antibiotics.
It will require no treatment.
It will be susceptible to all antibiotics.
6. Describe the basic principle of how a Bright Field Microscope operates.
A Bright Field Microscope uses transmitted light that passes through
the sample and is viewed against a bright background.
A Bright Field Microscope uses electrons to illuminate the sample for
high-resolution images.
A Bright Field Microscope employs fluorescent dyes to visualize
specific components of the sample.
A Bright Field Microscope reflects light off the sample to create a
dark background.
7. If a researcher wants to observe live cells in their natural state without
staining, which type of microscopy would be more appropriate than a Bright
Field Microscope?
Bright Field Microscope
, Electron Microscope
Fluorescence Microscope
Phase Contrast Microscope
8. Describe the main differences between autotrophs and chemotrophs.
Autotrophs require organic compounds for growth, while
chemotrophs do not.
Autotrophs obtain energy from light, while chemotrophs obtain
energy from chemical reactions.
Autotrophs produce their own food using inorganic substances,
while chemotrophs obtain energy from chemical reactions involving
organic or inorganic compounds.
Autotrophs are dependent on other organisms for energy, while
chemotrophs are not.
9. What is the correct order of events for viral life cycle
Attachment, penetration, biosynthesis, maturation, release of new
virions
Entry, attachment ,biosynthesis, maturation,release of new virions
Attachment, penetration, maturation, biosynthesis, release of new
virions
10. If a new vaccine is developed that provides immunity against measles,
mumps, and rubella, what would be the expected impact on public health
regarding these diseases?
No change in incidence of these diseases
Reduction in incidence of these diseases
, Increase in incidence of these diseases
Increase in hospitalizations due to these diseases
11. The Scanning Electron Microscope (SEM):
All the above
Whole cells coated with gold
Has detailed 3D images
Electron beam passes over cells, electrons are scattered
Objects magnify 1,000 to 10,000 times
12. Proteins are needed for both structural and functional roles
false
true
13. What type of microscope took this image?
Transmission electron microscope
Brightfield microscope
Exam Questions & 100% Correct Answers | Latest Update
2026 | Biology Exam Prep
1. Left untreated, three percent of cases of Streptococcal pharyngitis will
progress to which of the following?
Klebsiella pneumonia
Laryngitis
Conjunctivitis
Rheumatic fever
2. Which organelle is primarily responsible for protein synthesis in eukaryotic
cells?
Endoplasmic Reticulum
Lysosomes
Nucleus
Chloroplasts
3. Which strain of coronavirus was responsible for the 2003 epidemic?
MERS
SARS
4. Explain how the life cycles of lytic and temperate phages differ in terms of
their interaction with host cells.
Lytic phages do not require a host cell, while temperate phages do.
Lytic phages immediately take over the host's machinery to
replicate and cause cell lysis, while temperate phages can enter a
, lysogenic cycle, integrating their DNA into the host's genome and
remaining dormant.
Lytic phages replicate slowly, while temperate phages replicate
quickly.
Lytic phages can only infect specific strains of bacteria, while
temperate phages can infect a wider range.
5. If a new bacterial strain is found to be Gram-negative, what implications does
this have for treatment options?
It will be easier to culture in the lab.
It may be more resistant to certain antibiotics.
It will require no treatment.
It will be susceptible to all antibiotics.
6. Describe the basic principle of how a Bright Field Microscope operates.
A Bright Field Microscope uses transmitted light that passes through
the sample and is viewed against a bright background.
A Bright Field Microscope uses electrons to illuminate the sample for
high-resolution images.
A Bright Field Microscope employs fluorescent dyes to visualize
specific components of the sample.
A Bright Field Microscope reflects light off the sample to create a
dark background.
7. If a researcher wants to observe live cells in their natural state without
staining, which type of microscopy would be more appropriate than a Bright
Field Microscope?
Bright Field Microscope
, Electron Microscope
Fluorescence Microscope
Phase Contrast Microscope
8. Describe the main differences between autotrophs and chemotrophs.
Autotrophs require organic compounds for growth, while
chemotrophs do not.
Autotrophs obtain energy from light, while chemotrophs obtain
energy from chemical reactions.
Autotrophs produce their own food using inorganic substances,
while chemotrophs obtain energy from chemical reactions involving
organic or inorganic compounds.
Autotrophs are dependent on other organisms for energy, while
chemotrophs are not.
9. What is the correct order of events for viral life cycle
Attachment, penetration, biosynthesis, maturation, release of new
virions
Entry, attachment ,biosynthesis, maturation,release of new virions
Attachment, penetration, maturation, biosynthesis, release of new
virions
10. If a new vaccine is developed that provides immunity against measles,
mumps, and rubella, what would be the expected impact on public health
regarding these diseases?
No change in incidence of these diseases
Reduction in incidence of these diseases
, Increase in incidence of these diseases
Increase in hospitalizations due to these diseases
11. The Scanning Electron Microscope (SEM):
All the above
Whole cells coated with gold
Has detailed 3D images
Electron beam passes over cells, electrons are scattered
Objects magnify 1,000 to 10,000 times
12. Proteins are needed for both structural and functional roles
false
true
13. What type of microscope took this image?
Transmission electron microscope
Brightfield microscope
