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Assessment
Chapter Test A
Bacteria and Viruses
MULTIPLE CHOICE
Write the letter of the correct answer in the space provided.
______ 1. When bacteria reproduce by binary fission, VIRs1
a. two cells produce a third cell.
b. two cells produce two more cells.
c. one cell produces two cells.
d. one cell produces three or more cells.
______ 2. A way to prevent viral infections is through VIRs3
a. genetic engineering.
b. bioremediation.
c. antibiotics.
d. vaccinations.
______ 3. Which of the following is NOT true of bacteria? VIRs2
a. Bacteria change nitrogen into a form plants can use.
b. Bacteria change oxygen into nitrogen.
c. Bacteria change the sugar in milk to lactic acid.
d. Bacteria change harmful chemicals into harmless ones.
______ 4. What organism can live where nothing else lives? VIRs1
a. viruses
b. eubacteria
c. cyanobacteria
d. archaebacteria
______ 5. All bacteria have VIRs1
a. one cell.
b. two cells.
c. three cells.
d. four or more cells.
______ 6. Which of the following is NOT a shape of bacteria? VIRs1
a. crystal
b. spirilla
c. cocci
d. bacilli
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Bacteria and Viruses
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Chapter Test A continued
______ 7. Which of the following is NOT a shape of viruses? VIRs3
a. crystal
b. spirilla
c. sphere
d. cylinder
______ 8. What is one function that viruses share with living things? VIRs3
a. They eat.
b. They move.
c. They reproduce.
d. They grow.
______ 9. Viruses reproduce by VIRs3
a. nitrogen fixation.
b. the lysogenic cycle and the lytic cycle.
c. the lytic cycle only.
d. binary fission.
______10. What is one way bacteria help the environment? VIRs2
a. They change oxygen to a form plants can use.
b. They change nitrogen to a form plants can use.
c. They change oxygen into nitrogen.
d. They change nitrogen into oxygen.
______11. What type of medicine is used to kill bacteria? VIRs2
a. antiviral
b. insulin
c. vaccine
d. antibiotic
______12. Which of the following is an example of bioremediation? VIRs2
a. using microorganisms to clean up an oil spill
b. using bacteria to make yogurt
c. creating plants that are resistant to bacteria
d. adding nitrogen-fixing bacteria to the soil before planting crops
______13. Which of the following is an example of genetic engineering? VIRs2
a. using microorganisms to clean up an oil spill
b. using bacteria to make yogurt
c. creating plants that are resistant to bacteria
d. adding nitrogen-fixing bacteria to the soil before planting crops
______14. Which do antiviral medicines do? VIRs3
a. kill bacteria
b. kill viruses
c. stop viruses from reproducing
d. cure viral infections
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Bacteria and Viruses
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Chapter Test A continued
MATCHING
Match the correct description with the correct term. Write the letter in the space
provided.
a. decomposers
______15. an organism that cannot live
on its own VIRs3
b. prokaryote
c. producers
______16. eubacteria that make their
own food VIRs2
d. eubacteria
e. virus
______ 17. bacteria that break down
dead organisms VIRs2
f. cyanobacteria
______18. an organism with no nucleus VIRs1
______19. bacteria that contain chlorophyll VIRs1
______20. the most common type of bacteria VIRs1
______21. thick-walled cells in which bacteria
store genetic material VIRs1
a. virus
b. host
c. pathogenic bacteria
______22. an organism that invades a cell and
uses it to create more organisms VIRs3
d. endospores
______23. bacteria that cause disease VIRs2
e. bioremediation
______24. use of bacteria to change harmful
chemicals to harmless ones VIRs2
______25. type of cell in which viruses reproduce VIRs3
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Bacteria and Viruses
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Print RESOURCE PAGE
TEACHER
SECTION: VIRUSES
1.
2.
3.
4.
5.
H
J
D
I
B
6.
7.
8.
9.
10.
14. Answers will vary. Sample answer:
A
F
E
C
G
Chapter Test A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
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C
D
B
D
A
A
B
C
B
B
D
A
C
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23.
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25.
C
E
C
A
B
F
D
D
A
C
E
B
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Chapter Test B
1.
2.
3.
4.
5.
6.
7.
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11.
12.
13.
endospore
bioremediation
antibiotic
pathogenic
viruses
antiviral
D
A
A
B
D
B
Answers will vary. Sample answer:
The first plant cell could have evolved
from bacteria similar to cyanobacteria
living inside large cells. Cyanobacteria
are bacteria that contain chlorophyll,
which is used to produce food through
photosynthesis. The bacteria could
make food while the cell provided the
bacteria with an environment in which
to live. Eventually, this combination
may have allowed cells to produce food,
giving rise to the first plants on Earth.
17.
18.
19.
Decomposers break down nutrients
and make them available to all living
things. Nitrogen-fixing bacteria
consume nitrogen from the air and
break it down into a form that can be
used by plants. Some bacteria are used
to produce antibiotics. Antibiotics kill
bacteria and other microorganisms
that cause diseases.
Answers will vary. Sample answer: In
the lytic cycle, the virus enters a cell
and injects it with its genetic material.
The virus’s genes reproduce and break
out of the cell, killing it. In the
lysogenic cycle, the virus puts its
genes in a cell, but the genes don’t
reproduce right away. They stay
inactive. Once they reproduce, they
begin the lytic cycle.
Answers will vary. Sample answer:
Technological advances in
transportation have triggered the
spread of viruses. Airplanes, trains,
and cars have allowed viruses to travel
in their human hosts, thereby
spreading infections to new locations.
Answers will vary. Sample answer:
Bacteria can feed on a cell’s nutrients
and viruses cannot. Perhaps an
antibiotic makes it impossible for
bacteria to eat, and so they die.
Answers will vary. Sample answer:
I would prefer to work with helpful
bacteria, doing things such as cleaning
up oil spills or other pollution; or I
would prefer working with pathogenic
bacteria and finding ways to kill them
and cure diseases.
a. heat lovers
b. methane makers
c. ocean vents
d. swamps
e. Dead Sea
f. decomposers
g. consumers
h. dead organisms
i. food they make
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Bacteria and Viruses