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Bacteria And Viruses Review
Test Description: Study!
Instructions: Answer all questions to get your test result.
1) How do the size of bacteria compare to the size of viruses?
A
Some viruses may be smaller than bacteria, but some may be larger
B
Bacteria are smaller than viruses
C
Bacteria and viruses are roughly the same size
D
Viruses are smaller than bacteria
2) Which of the following best supports the classification of viruses as non-living?
A
They have no food or energy requirements.
B
They have DNA or RNA.
C
They can reproduce their DNA inside of a host cell.
D
They can mutate or change.
3) Which of the following describes the way in which a vaccine works?
A
They kill the virus only, and the host cell is able to adapt.
B
Vaccines contain the normal virus, but small children's immune systems are developed enough to fight them
C
Our immune system launches a response to the harmless form of the virus found in a vaccine, thereby learning to recognize it
D
They kill the virus and the host cell
4) How are bacteria classified?
A
prokaryotes
B
multicellular organisms
C
parasites
D
eukaryotes
5) Which best explains why bacteria are so biologically successful?
A
They can use their protein coating to hijack a cell and easily replicate their DNA or RNA
B
They do not require food or energy and they can reproduce using a host cell
C
They can reproduce rapidly and live in extreme environments
D
If they are crystallized, they can still be injected into a cell and survive and they do not require food or energy.
6) Which of the following is NOT a way in which bacteria are identified?
A
Their mode of movement
B
Their shape
C
Their cell wall
D
Their life stage
7) Which describes the ability of bacteria to break down organisms into their essential chemical elements?
A
The Nitrogen Cycle
B
Decomposition
C
Nitrogen fixation
D
Pathogens
8) Which describes the most essential role of bacteria in nitrogen fixation?
A
Bacteria are able to convert the nitrogen in the air into usable nitrates in the soil
B
Bacteria can break down nitrogen in the ground and release it back into the air
C
Some bacteria can digest oil, which is helpful in oil spills.
D
Bacteria contain high amounts of nitrogen which is toxic to humans and other organisms
9) Which of the following best describes how some bacteria can be pathogenic?
A
Some bacteria help dead organisms decompose
B
Some bacteria can release toxins in the body
C
Some bacteria break down nitrogen in the air
D
Some bacteria are used to produce a variety of foods and beverages
10) Which pathogen can be prokaryotic, eukaryotic, or non-living?
A
lice
B
bacteria
C
parasites
D
virus
*select an answer for all questions
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