BIO2104 EXAM 1 2025 QUESTIONS AND
ANSWERS
You are examining a drop of aquarium water under the microscope and observe green cells
without nuclei. You conclude that the cells are most likely... - ANS Bacteria
A water sample from a hit thermal vent contained a single-called organism that lacked nucleus.
What is its most likely classification? - ANS Domain Archaea
Smallpox vaccination using materials taken from cowpox lesions was carried out by... -
ANS Jenner
Koch's postulates are criteria used to establish that - ANS a specific microbe is the cause of a
specific disease
Which scientists showed that anthrax was caused by the bacterium, Bacillus anthracis? -
ANS Robert Koch
Which are made up of prokaryotic cells ? - ANS Bacteria and archaea
What is not a typical characteristic of most bacterial plasma membranes? - ANS contains
cholesterol
Paired chromosomes are found in the... - ANS Eukarya
Which structure is essential for all cells? - ANS Cytoplasmic membrane
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, Bacterial cells could have any of the following appendages except - ANS cilia
The anti microbial drug imidazole inhibits cholesterol synthesis. This would most likely interfere
with - ANS Eukaryotic plasma membranes
What is not true about the glycocalyx? - ANS None of the above
If bacteria living in salty seawater were displaced to a freshwater environment, the cell
structure that would prevent the cells from rupturing is the - ANS cell wall
lipoteichoic acid anchors the wall of gram negative bacteria to the plasma membrane -
ANS False
Proteins called gyrase are present in an eukaryotic cell type - ANS False
If you observe rod shaped, pink cells on a slide that had just been gram stained, you can assume
their cell walls contain endotoxins - ANS True
Flagella of gram positive bacteria have two pairs of rings and flagella of gram negative bacteria
have one pair of rings in the basal body - ANS False. Gram positive has TWO. Gram negative
has FOUR
Most bacterial capsules are made up primarily of peptidoglycan - ANS False. Polysaccharides
Some bacteria produce endospores for reproduction - ANS False
In the three domain system, all prokaryotes are grouped into the same domain. - ANS False
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ANSWERS
You are examining a drop of aquarium water under the microscope and observe green cells
without nuclei. You conclude that the cells are most likely... - ANS Bacteria
A water sample from a hit thermal vent contained a single-called organism that lacked nucleus.
What is its most likely classification? - ANS Domain Archaea
Smallpox vaccination using materials taken from cowpox lesions was carried out by... -
ANS Jenner
Koch's postulates are criteria used to establish that - ANS a specific microbe is the cause of a
specific disease
Which scientists showed that anthrax was caused by the bacterium, Bacillus anthracis? -
ANS Robert Koch
Which are made up of prokaryotic cells ? - ANS Bacteria and archaea
What is not a typical characteristic of most bacterial plasma membranes? - ANS contains
cholesterol
Paired chromosomes are found in the... - ANS Eukarya
Which structure is essential for all cells? - ANS Cytoplasmic membrane
Copyright ©2025 BRIGHTSTARS ALL RIGHTS RESERVED 1
, Bacterial cells could have any of the following appendages except - ANS cilia
The anti microbial drug imidazole inhibits cholesterol synthesis. This would most likely interfere
with - ANS Eukaryotic plasma membranes
What is not true about the glycocalyx? - ANS None of the above
If bacteria living in salty seawater were displaced to a freshwater environment, the cell
structure that would prevent the cells from rupturing is the - ANS cell wall
lipoteichoic acid anchors the wall of gram negative bacteria to the plasma membrane -
ANS False
Proteins called gyrase are present in an eukaryotic cell type - ANS False
If you observe rod shaped, pink cells on a slide that had just been gram stained, you can assume
their cell walls contain endotoxins - ANS True
Flagella of gram positive bacteria have two pairs of rings and flagella of gram negative bacteria
have one pair of rings in the basal body - ANS False. Gram positive has TWO. Gram negative
has FOUR
Most bacterial capsules are made up primarily of peptidoglycan - ANS False. Polysaccharides
Some bacteria produce endospores for reproduction - ANS False
In the three domain system, all prokaryotes are grouped into the same domain. - ANS False
Copyright ©2025 BRIGHTSTARS ALL RIGHTS RESERVED 2
