Bacteria and Archaea Worksheet
Explore the characteristics, structures, and ecological roles of bacteria and archaea with this Grade 10 science worksheet.
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Bacteria and Archaea: The World of Prokaryotes
Name:
Date:
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Read each question carefully and answer to the best of your ability. Use complete sentences where appropriate.
1. Which of the following is NOT a characteristic of prokaryotic cells?
Lack of a membrane-bound nucleus
Presence of ribosomes
Presence of mitochondria
Circular DNA
2. Organisms belonging to the domain Archaea are known for living in:
Temperate forests
Extreme environments
Oceans only
Human digestive tracts
3. The two domains of life that consist entirely of prokaryotic organisms are Bacteria and .
4. Many bacteria possess a whip-like appendage called a that aids in movement.
5. The process by which bacteria exchange genetic material through a pilus is called .
6. Observe the diagram of the bacterial cell below. Label at least three distinct structures.
7. Describe one significant difference between the cell walls of Bacteria and Archaea.
8. All bacteria are harmful to humans.
True
False
9. Archaea are more closely related to eukaryotes than to bacteria.
True
False
Use the words below to complete the sentences.
10. Archaea are often referred to as due to their ability to thrive in harsh conditions.
11. The cell walls of most bacteria contain , a polymer not found in archaea.
12. Bacteria reproduce asexually through a process called .
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