1 | Page
BIOL 251 FINAL EXAM 2026
ACTUAL QUESTIONS WITH
VERIFIED SOLUTIONS.
Where are phospholipids most likely found in a Prokaryotic
cell?
A. Flagella
B. Plasma membrane
C. All of these answers are correct
D. Around organelles - ANSWER-B. Plasma membrane
Which of the following is nota reason fungi can grow where
bacteria can not?
A. Fungi are most resistant to osmotic pressure than bacteria
B. Fungi are more heat tolerant than more bacteria
C. Fungi can grow at a pH of 5, too low for most bacteria
D. Fungi require less nitrogen than bacteria - ANSWER-B.
Fungi are more heat tolerant than more bacteria
,2 | Page
Which of the following is not a function of teichoic acid found in
Gram positive cell walls?
A. Produces endotoxin, which causes endotoxic toxic
B. Prevention of excessive cell wall breakdown
C. Provides antigenicity to the cell wall
D. Regulation of the movements of cations - ANSWER-A.
Produces endotoxin, which causes endotoxic toxic
Which scientist discussed in class is responsible for developing
an experimental procedure that allows us to prove a specific
microbe causes a specific infectious disease?
A. John Needham
B. Rosalind Franklin
C. Leo Spallanzani
D. Robert Koch
E. Robert Hooke - ANSWER-D. Robert Koch
Which of the following is not included in the field of
microbiology?
A. Bacteriology
,3 | Page
B. Mycology
C. Parasitology
D. Ethology
E. Virology - ANSWER-D. Ethology
For most pathogenic dimorphic fungi:
A. Growth with CO2 is yeast-like, growth without CO2 is mold-
like
B. Growth with CO2 is mold-like, growth without CO2 is yeast-
like
C. Growth at 25C is yeast-like, growth at 37C is mold-like
D. Growth at 25C is mold-like, growth at 37C is yeast-like -
ANSWER-D. Growth at 25C is mold-like, growth at 37C is
yeast-like
James Watson, Francis Crick, Maurice Wilkins, and Rosalind
Franklin discovered the structure of DNA, but which one did not
receive the Nobel Prize for the work?
A. Francis Crick
B. Maurice Wilkins
C. James Watson
, 4 | Page
D. Rosalind Franklin - ANSWER-D. Rosalind Franklin
Which of the following is not a basic viral morphology?
A. Linear
B. Complex
C. Helical
D. Polyhedral
E. Enveloped - ANSWER-A. Linear
When budding yeast fail to separate after division, they form
short chains of cells called?
A. Streptococci chains
B. Conidophores
C. Pseudohypha
D. Hyphae
E. Budding chains - ANSWER-C. Pseudohypha
Which of the following is true fir bacterial endospores?
BIOL 251 FINAL EXAM 2026
ACTUAL QUESTIONS WITH
VERIFIED SOLUTIONS.
Where are phospholipids most likely found in a Prokaryotic
cell?
A. Flagella
B. Plasma membrane
C. All of these answers are correct
D. Around organelles - ANSWER-B. Plasma membrane
Which of the following is nota reason fungi can grow where
bacteria can not?
A. Fungi are most resistant to osmotic pressure than bacteria
B. Fungi are more heat tolerant than more bacteria
C. Fungi can grow at a pH of 5, too low for most bacteria
D. Fungi require less nitrogen than bacteria - ANSWER-B.
Fungi are more heat tolerant than more bacteria
,2 | Page
Which of the following is not a function of teichoic acid found in
Gram positive cell walls?
A. Produces endotoxin, which causes endotoxic toxic
B. Prevention of excessive cell wall breakdown
C. Provides antigenicity to the cell wall
D. Regulation of the movements of cations - ANSWER-A.
Produces endotoxin, which causes endotoxic toxic
Which scientist discussed in class is responsible for developing
an experimental procedure that allows us to prove a specific
microbe causes a specific infectious disease?
A. John Needham
B. Rosalind Franklin
C. Leo Spallanzani
D. Robert Koch
E. Robert Hooke - ANSWER-D. Robert Koch
Which of the following is not included in the field of
microbiology?
A. Bacteriology
,3 | Page
B. Mycology
C. Parasitology
D. Ethology
E. Virology - ANSWER-D. Ethology
For most pathogenic dimorphic fungi:
A. Growth with CO2 is yeast-like, growth without CO2 is mold-
like
B. Growth with CO2 is mold-like, growth without CO2 is yeast-
like
C. Growth at 25C is yeast-like, growth at 37C is mold-like
D. Growth at 25C is mold-like, growth at 37C is yeast-like -
ANSWER-D. Growth at 25C is mold-like, growth at 37C is
yeast-like
James Watson, Francis Crick, Maurice Wilkins, and Rosalind
Franklin discovered the structure of DNA, but which one did not
receive the Nobel Prize for the work?
A. Francis Crick
B. Maurice Wilkins
C. James Watson
, 4 | Page
D. Rosalind Franklin - ANSWER-D. Rosalind Franklin
Which of the following is not a basic viral morphology?
A. Linear
B. Complex
C. Helical
D. Polyhedral
E. Enveloped - ANSWER-A. Linear
When budding yeast fail to separate after division, they form
short chains of cells called?
A. Streptococci chains
B. Conidophores
C. Pseudohypha
D. Hyphae
E. Budding chains - ANSWER-C. Pseudohypha
Which of the following is true fir bacterial endospores?
