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BIO 251 Final Exam Questions and Correct Answers the Latest Update and Recommended Version
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BIO 251 Final Exam Questions and Correct Answers the Latest Update and Recommended Version
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TestTrackers: Unlock Your Exam Potential! | Quality Practice Materials | Boost Your Confidence Today!BIO 251 Final Exam Questions and Correct
Answers the Latest Update and
Recommended Version
Which of the following pieces of evidence would argue AGAINST the theory of spontaneous
generation?
A. When a sterile bottle of broth is sealed against the air, no microbes grow. However, when
it is unsealed and exposed to air, microbes grow rapidly.
B. Whether or not broth grows microbes depends on how the broth was prepared.
C. All meat left uncovered will eventually produce maggots, regardless of whether or not the
meat has been cooked.
D. Microbial cells can grow in a wide variety of environments.
✓ A. When a sterile bottle of broth is sealed against the air, no microbes grow. However,
when it is unsealed and exposed to air, microbes grow rapidly.
✓
✓ Correct - A sealed broth bottle would have no access to outside organisms. If nothing
grows than this would support that microbes are generated by other microbes or living
organisms
Who is credited as the first person to discover microbes.
A. Antony van Leeuwenhoek
B. Josh Stomel
C. Francesco Redi
D. Luis Pasture
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✓ A. Antony van Leeuwenhoek
✓
✓ Correct- Leeuwenhoek first observed microbes in 1675
Most bacteria are pathogens
True
False
✓ False
The discovery of bacterial endospores explains why many scientists had difficulty replicating
Pasture's crooked bottle experiment.
True
False
✓ True
Who is considered the father of modern microbiology
A. Antony von Leeuwenhoek
B. Robert Hooke
C. Luis Pasture
D. John Needham
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✓ C. Luis Pasture
✓
✓ Correct - Pasture not only disproved spontaneous generation, he developed the process of
pasteurization, developed the first vaccine (or maybe stole it), and studied fermentation.
It can truly be said that before Pasture, microbiology was not a modern science
Which of the following features could be considered virulence factors? (select all that apply)
A. Inclusion bodies
B. Plasma membrane
C. Glycocalyx
D. Fimbria
E. Nucleoid
✓ C. glycocalyx
✓ D. fimbria
Which of the following statements is TRUE?
A. Most bacteria that contain capsules are gram+.
B. Bacteria growing in a biofilm are unlikely to respond well to standard antibiotic treatment.
C. Bacteria that grow as clusters are more likely to be pathogenic than bacteria that grow as
chains.
D. Eukaryotes contain DNA chromosomes while prokaryotes do not.
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✓ B. Bacteria growing in a biofilm are unlikely to respond well to standard antibiotic
treatment.
✓
✓ True, biofilms help shield the reproductive core of bacteria from the effects of antibiotics
All bacteria contain a flagella
True
False
✓ False
A patient comes into the emergency room with high fever, chills, and a two day old stab
wound to the lower abdomen. Culturing the patient's blood yields the following gram stained
bacteria. Based on this result, what common complication would you need to worry about?
*Image of streptobaccillus stained pink
A. Endotoxic shock
B. Pneumonia
C. Immune suppression
D. Bacterial meningitis
✓ A. Endotoxic shock
✓
✓ Correct, these cells are gram- and therefor have the endotoxin LPS
Which of the following structures would NOT be found in a bacterial cell?
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