Bacteria and Archaea Exploration
A Grade 7 science worksheet exploring the characteristics, differences, and importance of bacteria and archaea.
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Bacteria and Archaea Exploration
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Read each question carefully and answer to the best of your ability. Good luck!
1. What is the primary characteristic that bacteria and archaea share?
They are multicellular organisms.
They are eukaryotes.
They are prokaryotes.
They have membrane-bound organelles.
2. Which of the following environments are archaea most commonly found in?
Mild and temperate climates
Extreme environments (hot springs, salt lakes)
Human skin and digestive tracts
Inside plant cells
3. Bacteria and archaea are both organisms, meaning their cells lack a nucleus and other membrane-bound organelles.
4. Some bacteria are known as because they cause diseases.
5. Archaea are often called due to their ability to survive in harsh conditions.
6. All bacteria are harmful to humans.
True
False
7. Archaea have cell walls made of peptidoglycan, just like bacteria.
True
False
8. Observe the diagram of a bacterial cell. Label three parts that you can identify.
9. Briefly explain one way bacteria are beneficial to humans or the environment.
Match the term on the left with its description on the right.
10. Prokaryote
a. An organism that thrives in extreme conditions.
11. Extremophile
b. A single-celled organism without a nucleus.
12. Pathogen
c. A bacterium or other microorganism that causes disease.
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