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Chapter 2: Viruses And Bacteria
Test Description: 7th Grade
Instructions: Answer all questions to get your test result.
1) Why are viruses like parasites?
A
They destroy the cells they enter.
B
They use energy to develop.
C
They make their own food.
D
They multiply.
2) A virus needs energy to
A
grow and develop.
B
make food.
C
multiply
D
make cells.
3) A virus’s proteins are important because they
A
help the virus attach to its host.
B
provide energy for the virus.
C
contain the genetic material.
D
make new virus particles.
4) What ability of viruses makes them useful in gene therapy?
A
their ability to multiply in cells
B
their ability to remain inactive for a long time
C
their ability to take over the functions of host cells
D
their ability to enter cells
5) Which shape describes some bacterial cells?
A
bulletlike
B
threadlike
C
bricklike
D
rodlike
6) What process results in genetically different bacteria?
A
conjugation
B
asexual reproduction
C
respiration
D
binary fission
7) Endospores form during
A
harsh environmental conditions.
B
sunlight hours.
C
respiration
D
binary fission.
8) What important role do bacteria called decomposers play?
A
They return basic chemicals to the environment.
B
They slow down food spoilage.
C
They produce vitamins.
D
They kill harmful bacteria.
9) Which of the following is NOT a role of bacteria that live in human bodies?
A
digesting food
B
preventing disease-causing bacteria from attaching to your intestines
C
preventing diabetes
D
making vitamins
10) Which of the following is an example of indirect contact that spreads some infectious diseases?
A
touching and hugging
B
eating contaminated food
C
inhaling infected drops of moisture
D
animal bites
11) Binary fission is the bacterial process of
A
asexual reproduction.
B
obtaining food.
C
forming endospores.
D
producing energy.
12) Viruses are considered to be nonliving because they
A
use energy to grow.
B
cannot multiply.
C
produce wastes.
D
are not cells.
13) The process of breaking down food to release its energy is called
A
nutrition
B
respiration
C
conjugation
D
binary fission.
14) Which virus is named for the organism that it infects?
A
bacteriophage
B
Epstein-Barr virus
C
small pox virus
D
Ebola virus
15) What provides energy for a virus?
A
the fun
B
food
C
its host
D
a parasite
16) The term “antibiotic resistant” refers to bacteria that
A
are dead or altered.
B
survive in the presence of an antibiotic.
C
are resistant to a vaccine.
D
are weakened and destroyed by antibiotics.
*select an answer for all questions
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