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WorksheetsBio Ch 12 Bacteria
Total questions: 35
Worksheet time: 18mins
Which of the following is not a characteristic of archaea?
Many live in extreme environments such as volcanoes and acidic springs.
Peptidoglycan is absent from their cell walls.
They include species that produce methane.
They are eukaryotic.
Refer to the three images above. A doctor treated several patients who were sick from food poisoning. They had all eaten lunch at the Greasy Spoon restaurant. A state health inspector was immediately sent to inspect the restaurant and found Staphylococcus aureus in a sample of chicken salad. Which image did the inspector see under his microscope? Only one choice is correct.
image A
image B
image C
Refer to the three images above. None of the ill patients from the previous question had eaten the chicken salad. However, the health inspector found Bacillus cereus in the potato salad of the restaurant. All the people who had food poisoning had eaten the potato salad. Which image did the food inspector see under his microscope? Only one choice is correct.
image A
image B
image C
Refer to the three images above. Rhodospirillum rubrum was one of the three bacterial species that a student prepared to view under his microscope. Which image did he see when viewing this bacteria? Only one choice is correct.
image A
image B
image C
Gram staining
is used to classify bacteria.
detects amounts of peptidoglycan in the cell walls of bacteria.
can predict whether a particular antibiotic will be effective for treating a certain bacteria.
all of the above
Antibiotics control bacteria by __________
directly killing them
slowing their growth
both A and B
neither A nor B
Which bacterial structure protects a bacterium from drying out?
nucleoid
capsule
flagellum
none of these
A bacterium can transfer a plasmid to another bacterium during
binary fission.
conjugation.
transduction.
transformation.
Autotrophic bacteria that photosynthesize belong to the group known as
cyanobacteria.
opportunistic pathogens.
decomposers.
microbiota.
Which cellular structures do viruses lack?
mitochondria
ribosomes
both A and B
neither A nor B
Which of the following is not a virus?
all are viruses
Which of the following is not a viral disease?
Ebola
Lyme disease
HIV/AIDS
polio
You discover a unicellular organism in a pool in an abandoned salt mine. The organism has cell walls, but the walls do not contain peptidoglycan. The new organism is likely a species of bacteria.
true
false
Gram staining is used to determine whether a bacteria causes disease.
true
false
A bacterium’s capsule serves mainly as a means of movement.
true
false
The most common form of bacterial reproduction is binary fission.
true
false
All bacteria are heterotrophic.
true
false
Pneumonia and food poisoning are both caused by bacteria that are a normal part of the human microbiota.
true
false
The lytic cycle of viral reproduction causes rapid infection and destruction of host cells.
true
false
A virus may reproduce through either the lytic cycle or the lysogenic cycle, but not both.
true
false
Cold sores are an example of a disease caused by a bacteria.
true
false
HIV/AIDS is a retrovirus that can force its host cell to transcribe the viral RNA into the host cell’s DNA.
true
false
Viruses are sometimes used as pest control agents.
true
false
The use of specific chemicals such as sulfa drugs to treat or prevent disease is called?
drug therapy
chemotherapy
chemosynthesis
immune therapy
The redness, rise in temperature, and pain caused by the toxins of a pathogen are:
an inflammation
the specificity
an incubation period
bacteriostatic
The individual who developed the smallpox vaccine was:
Fleming
Ehrlich
Jenner
Koch
A heating process that kills bacteria in milk is called:
homogenization
pasteurization
radiation
dehydration
Bacteria are not used to:
form cheese
tan leather
make sauerkraut
pasteurize milk
What is #4?
head
collar
tail fibers
base plate
sheath
What is #2?
head
sheath
tail fibers
collar
base plate
What is #5?
head
collar
sheath
tail fibers
base plate
What is #1?
head
collar
sheath
base plate
tail fibers
What is #3?
head
collar
sheath
base plate
tail fibers
Although an antibiotic may be very effective against one type of bacterium, it may be useless against another type of bacterium.
true
false
A carcinogen is believed to cause aging.
true
false
