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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 use energy to develop.
C
They multiply.
D
They destroy the cells they enter.
2) A virus needs energy to
A
make cells.
B
make food.
C
grow and develop.
D
multiply
3) A virus’s proteins are important because they
A
help the virus attach to its host.
B
make new virus particles.
C
provide energy for the virus.
D
contain the genetic material.
4) What ability of viruses makes them useful in gene therapy?
A
their ability to remain inactive for a long time
B
their ability to multiply in cells
C
their ability to enter cells
D
their ability to take over the functions of host cells
5) Which shape describes some bacterial cells?
A
rodlike
B
threadlike
C
bricklike
D
bulletlike
6) What process results in genetically different bacteria?
A
respiration
B
conjugation
C
binary fission
D
asexual reproduction
7) Endospores form during
A
respiration
B
sunlight hours.
C
harsh environmental conditions.
D
binary fission.
8) What important role do bacteria called decomposers play?
A
They slow down food spoilage.
B
They kill harmful bacteria.
C
They return basic chemicals to the environment.
D
They produce vitamins.
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
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
forming endospores.
B
asexual reproduction.
C
producing energy.
D
obtaining food.
12) Viruses are considered to be nonliving because they
A
are not cells.
B
produce wastes.
C
cannot multiply.
D
use energy to grow.
13) The process of breaking down food to release its energy is called
A
nutrition
B
binary fission.
C
respiration
D
conjugation
14) Which virus is named for the organism that it infects?
A
small pox virus
B
Epstein-Barr virus
C
Ebola virus
D
bacteriophage
15) What provides energy for a virus?
A
its host
B
food
C
a parasite
D
the fun
16) The term “antibiotic resistant” refers to bacteria that
A
are weakened and destroyed by antibiotics.
B
are resistant to a vaccine.
C
are dead or altered.
D
survive in the presence of an antibiotic.
*select an answer for all questions
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