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