Viruses and Bacteria: Grade 8 Science
Explore the characteristics, structures, and impacts of viruses and bacteria on living organisms.
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Topics
Viruses and Bacteria
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Read each question carefully and answer to the best of your ability. This worksheet covers topics related to viruses and bacteria.
1. Which of the following is NOT a characteristic of a virus?
Contains genetic material
Can reproduce independently
Has a protein coat
Requires a host cell to replicate
2. Which structure is found in a bacterial cell but not typically in an animal cell?
Nucleus
Cell wall
Mitochondria
Cytoplasm
3. Viruses are considered parasites because they depend on a host cell for reproduction.
4. Bacteria reproduce primarily through a process called fission.
5. All bacteria are harmful to humans.
True
False
6. Antibiotics are effective against both bacterial and viral infections.
True
False
7. Briefly describe two ways in which bacteria can be beneficial to humans or the environment.
8. Explain why viruses are not considered living organisms by some scientists.
9. Label the following parts of the bacterial cell diagram:
A:
B:
C:
D: