Campbell 27 Test Bank
1) The predatory bacterium Bdellovibrio bacteriophorus drills into a prey bacterium and,
once inside, digests it. In an attack upon a gram-negative bacterium that has a slimy cell
covering, what is the correct sequence of structures penetrated by B. bacteriophorus on
its way to the prey's cytoplasm? - correct answers D) capsule, lipopolysaccharide
membrane, peptidoglycan, phospholipid membrane
2) Jams, jellies, preserves, honey, and other foods with high sugar content hardly ever
become contaminated by bacteria, even when the food containers are left open at room
temperature. This is because bacteria that encounter such an environment ________. -
correct answers A) undergo death as a result of water loss from the cell
3) Use the information in the following paragraph to answer the question.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
This bacterium's ability to survive in a human who is taking penicillin pills may be due to
the presence of ________. - correct answers A) gram-negative cell wall
4) Use the information in the following paragraph to answer the question.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
Adherence to the intestinal lining by this bacterium is due to its possession of
________. - correct answers A) fimbriae
5) Use the information in the following paragraph to answer the question.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
Which of the following statements about the cell wall is most probable? - correct
answers C) It has an outer membrane of lipopolysaccharide.
6) Use the information in the following paragraph to answer the question.
, A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
In which feature should one be able to locate a complete chromosome of this
bacterium? - correct answers B) nucleoid
7) The following table depicts characteristics of five prokaryotic species (A-E). Use the
information in the table to answer the following question.
Which two species should have much more phospholipid, in the form of bilayers, in their
cytoplasms than most other bacteria? - correct answers C) species B and E
8) The following table depicts characteristics of five prokaryotic species (A-E). Use the
information in the table to answer the following question.
Which species is capable of directed movement? - correct answers C) species C
10) Which of the following observations about flagella is accurate and is consistent with
the scientific conclusion that the flagella from eukaryotes and bacteria evolved
independently? - correct answers D) The protein structure and the mechanism of
movement in eukaryotes flagella are different from those of bacteria flagella.
9) The following table depicts characteristics of five prokaryotic species (A-E). Use the
information in the table to answer the following question.
How many of these species probably have a cell wall that consists partly of an outer
membrane of lipopolysaccharide? - correct answers C) three species
11) Which of the following observations about flagella is accurate and is consistent with
the scientific conclusion that the flagella from archaea and bacteria evolved
independently? - correct answers B) The protein structures in the flagella are different.
12) In a bacterium that possesses antibiotic resistance and the potential to persist
through very adverse conditions, such as freezing, drying, or high temperatures, DNA
should be located within, or be part of, which structures? - correct answers D) plasmids,
nucleoid, and endospore
13) If a bacterium regenerates from an endospore that did not possess any of the
plasmids that were contained in its original parent cell, the regenerated bacterium will
probably also lack ________. - correct answers A) antibiotic-resistant genes
14) Chloramphenicol is an antibiotic that targets prokaryotic (70S) ribosomes, but not
eukaryotic (80S) ribosomes. Which of these questions stems from this observation, plus
an understanding of eukaryotic origins? - correct answers C) If chloramphenicol inhibits
prokaryotic ribosomes, should it not also inhibit mitochondrial ribosomes?
15) Termites eat wood, but many do not produce enzymes themselves that will digest
the cellulose in the wood. Instead, some termites house a complex community of
protozoa, bacteria, and archaea that could help digest the cellulose. Imagine an
experiment that fed termites either wood only or wood and antibiotics, and then
measured the amount of energy extracted from the wood. If both groups gained equal
amounts of energy, which of the conclusions is the most logical? - correct answers C)
1) The predatory bacterium Bdellovibrio bacteriophorus drills into a prey bacterium and,
once inside, digests it. In an attack upon a gram-negative bacterium that has a slimy cell
covering, what is the correct sequence of structures penetrated by B. bacteriophorus on
its way to the prey's cytoplasm? - correct answers D) capsule, lipopolysaccharide
membrane, peptidoglycan, phospholipid membrane
2) Jams, jellies, preserves, honey, and other foods with high sugar content hardly ever
become contaminated by bacteria, even when the food containers are left open at room
temperature. This is because bacteria that encounter such an environment ________. -
correct answers A) undergo death as a result of water loss from the cell
3) Use the information in the following paragraph to answer the question.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
This bacterium's ability to survive in a human who is taking penicillin pills may be due to
the presence of ________. - correct answers A) gram-negative cell wall
4) Use the information in the following paragraph to answer the question.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
Adherence to the intestinal lining by this bacterium is due to its possession of
________. - correct answers A) fimbriae
5) Use the information in the following paragraph to answer the question.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
Which of the following statements about the cell wall is most probable? - correct
answers C) It has an outer membrane of lipopolysaccharide.
6) Use the information in the following paragraph to answer the question.
, A hypothetical bacterium swims among human intestinal contents until it finds a suitable
location on the intestinal lining. It adheres to the intestinal lining using a feature that also
protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a
human in whose intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. The bacterium is not susceptible to the penicillin
family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
In which feature should one be able to locate a complete chromosome of this
bacterium? - correct answers B) nucleoid
7) The following table depicts characteristics of five prokaryotic species (A-E). Use the
information in the table to answer the following question.
Which two species should have much more phospholipid, in the form of bilayers, in their
cytoplasms than most other bacteria? - correct answers C) species B and E
8) The following table depicts characteristics of five prokaryotic species (A-E). Use the
information in the table to answer the following question.
Which species is capable of directed movement? - correct answers C) species C
10) Which of the following observations about flagella is accurate and is consistent with
the scientific conclusion that the flagella from eukaryotes and bacteria evolved
independently? - correct answers D) The protein structure and the mechanism of
movement in eukaryotes flagella are different from those of bacteria flagella.
9) The following table depicts characteristics of five prokaryotic species (A-E). Use the
information in the table to answer the following question.
How many of these species probably have a cell wall that consists partly of an outer
membrane of lipopolysaccharide? - correct answers C) three species
11) Which of the following observations about flagella is accurate and is consistent with
the scientific conclusion that the flagella from archaea and bacteria evolved
independently? - correct answers B) The protein structures in the flagella are different.
12) In a bacterium that possesses antibiotic resistance and the potential to persist
through very adverse conditions, such as freezing, drying, or high temperatures, DNA
should be located within, or be part of, which structures? - correct answers D) plasmids,
nucleoid, and endospore
13) If a bacterium regenerates from an endospore that did not possess any of the
plasmids that were contained in its original parent cell, the regenerated bacterium will
probably also lack ________. - correct answers A) antibiotic-resistant genes
14) Chloramphenicol is an antibiotic that targets prokaryotic (70S) ribosomes, but not
eukaryotic (80S) ribosomes. Which of these questions stems from this observation, plus
an understanding of eukaryotic origins? - correct answers C) If chloramphenicol inhibits
prokaryotic ribosomes, should it not also inhibit mitochondrial ribosomes?
15) Termites eat wood, but many do not produce enzymes themselves that will digest
the cellulose in the wood. Instead, some termites house a complex community of
protozoa, bacteria, and archaea that could help digest the cellulose. Imagine an
experiment that fed termites either wood only or wood and antibiotics, and then
measured the amount of energy extracted from the wood. If both groups gained equal
amounts of energy, which of the conclusions is the most logical? - correct answers C)
