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SBI 3CW
Microbiology Test Review
Viruses
True or False
1. Viruses are not living organisms.
2. Viruses do not contain DNA or RNA.
3. Viruses do not contain a cell membrane, nucleus, or cytoplasm.
4. Viruses are destroyed by antibiotics.
5. The genetic material from viruses can direct the host cell to produce new viruses.
Multiple Choice
6. Injecting a person with plasma antibodies from a person or an animal who has been exposed to
a disease provides which of the following?
a.
active immunity
c.
autoimmunity
b.
passive immunity
d.
anti-immunity
7. Once you have made antibodies for a specific microbe invader
a.
the antibodies are quickly destroyed
b.
your immune system remembers how to make them when that microbe invades again
c.
the antibodies will be in your cells for the rest of your life
d.
you are immune to a number of different microbe invaders
Completion
Lytic
Lysogenic
Immunity
Bacteriophage
dormant
8. A ___________ is a virus that attacks bacteria.
9. ___________________ is the ability of the body to resist and infectious disease.
10. The ____________ cycle occurs when a virus is actively infecting the cell causing the
production of more viruses.
Bacteria
True or False
1. Bacteria are not living organisms.
2. Bacteria do not contain a nuclear envelope.
3. Symptoms of E. coli O157:H7 poisoning result from the destruction of host cells and tissues.
4. The process that uses bacteria to treat pollution sites is called bioremediation.
5. Proper chlorination of the town’s water supply could have prevented deaths in Walkerton.
6. The human skin forms the first line of defence against bacterial infections.
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Multiple Choice
7. Which of the following statements concerning antibodies is correct?
a.
Antibodies are specific for one antigen.
b.
Antibodies are produced by red blood cells.
c.
Antibodies act by consuming the antigen.
d.
Antibodies remain active only until the antigen has been eliminated.
8. The most common form of reproduction in bacteria is
a.
conjugation
c.
b.
binary fission
d.
transformation
sexual reproduction
9. Probiotic agents are bacteria that
a.
release digestive enzymes into dead organic material
b.
help maintain the health of people
c.
feed on toxic chemicals in the soil
d.
release enzymes to breakdown sewage
10. Which of the following is not directly involved in the body’s defence against disease?
a.
skin
c.
macrophages
b.
red blood cells
d.
Antibodies
11. These protein molecules protect the body from foreign invaders.
a.
antiseptic
c.
antibodies
b.
antigens
d.
antimatter
12. These cells engulf and digest invading bacteria.
a.
lymphocyte
c.
b.
plasma cell
d.
memory cell
macrophages
Completion
prokaryotic
streptococcus
Bacillus anthracis antibiotics
endospore
conjugation
eukaryotic
binary fission
plasmid
anaerobic
archaebacteria
spirilla
aerobic
ribosome
1. Bacteria that can live in the presence of oxygen are called ____________________, and
bacteria that can live in the absence of oxygen are called __________________.
Escherichia coli
2. Some bacteria reproduce sexually via ____________________.
3. Eubacteria are classified according to shape, configuration, ____________________, and type
of nutrition.
4. Organisms in kingdom ________________ live in extreme environments and are anaerobic.
5. Spherical bacteria that exist in chains are called: ___________________
6. __________________ are commonly prescribed for bacterial infections.
7. Archaebacteria and eubacteria are both _____________________ cells.
8. Bacteria reproduce asexually using __________________________.
9. Some bacteria (e.g. anthrax bacteria) can form an __________________ in order to survive
harsh environmental conditions.
10. A __________________ is a small, circular piece of DNA that is separate from the
chromosome in bacterial cells and contains different genes.
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Short Answer
1. Name and draw the three bacterial shapes.
2. Indicate whether each organism below belongs to kingdom Eubacteria or Archaebacteria.
Description
Kingdom
produces methane
lives on salt
Escherichia coli
live in thermal vents
3. All bacteria undergo asexual reproduction by the process of binary fission. Explain what
is happening in the sequence below.
4. Explain the difference between disinfectants and antiseptics.
Kingdom Protista
True or False
1. Through photosynthesis, green algae supply 80% of the global supply of oxygen.
2. Pseudopodia are tiny hair-like structures that beat to produce cell movement in protists.
Multiple Choice
3. Which of the following is not an important use of algae?
a. used as pathogens
b. used as decomposers
c. used in the production of drug capsules
d. used in the production of fertilizers
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Kingdom Fungi
True or False
1. Lichens are composed of two organisms: a fungi and a plant.
2. Fungi use photosynthesis to make their own food.
3. Multiple Choice
4. Which of the following is not a structural characteristic of fungi?
a.
hyphae
c.
roots
b.
spores
d.
mycelium
5. Which of the following is not a benefit fungi provide to humans?
a.
yeast help make bread, wine, and beer
b.
Penicillium produces antibiotic
c.
trapping solar energy in photosynthesis
d.
Aspergillus is used to flavour drinks
6. Ringworm and Athlete’s Foot are caused by a
a.
virus
c.
b.
bacterium
d.
protist
fungus
7. Fungi can be both useful and harmful to living things. Complete the following table:
Contributions of fungi
Dangers of fungi
Microorganisms in Ecosystems
1. Algae are an important food source for many marine mollusks. One mollusk,
Plakibranchus, incorporates algae into its tissues. The algae continue to function and
provide the animal with oxygen. What sort of symbiotic relationship is this?
a.
mutualism
c.
commensalism
b.
parasitism
d.
bipolarism
5. In the chart below, define each type of symbiosis and provide one example of how
microorganisms are involved in each type of symbiosis.
Type of Symbiosis
Explanation
Microorganism Example
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Microorganisms in Biotechnology
True or False
1. A restriction enzyme contains DNA from two or more different organisms.
Multiple Choice
2. Which of the following organisms are commonly used in gene therapy?
a.
viruses
c.
fungi
b.
bacteria
d.
plants
3. Cultured bacterial cells spliced with human genes have been used to manufacture all of the
following except
a.
human growth factor
c.
insulin
b.
vaccines for HIV
d.
blood factors for treating hemophilia
Short Answer
4. A researcher realizes there is a market for buttered popcorn and hypothesizes that a
viral vector could be used to insert the butter gene into the corn cell. Draw a labelled
diagram showing the sequence of events that could produce this new consumer
product.
Multiple Sections
Matching
Match each term to its description.
a. plasmid
b. recombinant DNA technology
c. restriction enzymes
d. bacteria
1. Attacks a specific sequence of nitrogenous bases on the DNA molecule, breaking it apart.
2. Fragments of DNA from two or more different organisms are spliced together.
3. A small ring of genetic material, harvested from bacterial cells.
4. Host organism used in recombinant DNA technology.
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Match each term to its description
a. antigen
f. passive immunity
b. biotechnology
g. mycelium
c. toxin
h. macrophage
d. pathogen
i. anaerobic
e. lysogenic
j. saprophytes
1.
a disease-causing organism
2. antibodies give temporary protection against a disease
3. bacteria that grow in the absence of oxygen
4. a poison produced in the body of a living organism
5. organisms that obtain nutrients from dead material
6. branching filaments in fungus
7. any substance that causes the formation of antibodies
8. the use of living things in industrial applications
9. white blood cells that engulf and destroy pathogens
10. the dormant state of a virus
Short Answer
1. Identify the following organisms as prokaryotic (P), eukaryotic (E), or neither (X).
____ E. coli
___ paramecium
____ HIV
____ pox virus
___ Amoeba
____Lactobacillus
____ green algae
2. Classify each of the following organisms into one of these kingdoms: Eubacteria, Archaebacteria,
Protista, Fungi, or other. Write the name of the kingdom in the box.
b.
c.
a.
d.
e.
h.
g.
f.
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