| Homeostasis & Transport Answer Key |
| Phrase: Concentration gradients cause molecules to move |
| Terms: passive transport |
Category: Resources
Pzzsol Intro to Biology
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Puzzle Solution – Cell Reproduction
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Quiz Bacteria
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Bacteria |
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True/False
Indicate whether the sentence or statement is true or false.
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| 1. |
Gram-negative bacteria have a thick layer of peptidoglycan that stains purple.
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| 2. |
Bacteria lack nuclei and therefore also lack genetic material.
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| 3. |
Bacterial cells have membrane-bound organelles and chromosomes.
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| 4. |
Bacterial cells are usually much larger than eukaryotic cells.
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| 5. |
Bacteria are incapable of movement themselves; they can only get to new locations by growing toward them or by forming endospores and being carried in air or water.
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| 6. |
Some bacteria cannot survive in the presence of oxygen.
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| 7. |
When bacteria undergo nonreproductive genetic recombination, their bacterial chromosome is altered.
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| 8. |
Certain antibiotics have become ineffective against certain strains of bacteria. These bacteria have developed a resistance, which may be passed on from one generation of bacteria to the next.
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| 9. |
The photoautotrophic bacteria are the only bacteria that are indirectly beneficial to humans.
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Completion
Complete each sentence or statement.
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| 10. |
Spiral bacteria are called ____________________.
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| 11. |
Spherical bacteria are called ____________________.
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| 12. |
Rod-shaped bacteria are called ____________________.
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| 13. |
The procedure used to distinguish between two types of bacterial cell wall structures is called ____________________.
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| 14. |
Protective structures that some bacteria may form under harsh conditions are ____________________.
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| 15. |
The cell walls of Gram-negative eubacteria are composed of a combination of polysaccharide and polypeptide called ____________________.
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| 16. |
Bacteria that obtain their energy by removing electrons from inorganic molecules, rather than obtaining energy from the sun, are called ____________________ bacteria.
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| 17. |
In general, organisms that obtain their energy from sunlight are called ____________________.
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| 18. |
Bacteria that are heterotrophic and feed on dead organic matter are called ____________________.
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| 19. |
A(n) ____________________ is a substance that can be obtained from bacteria or fungi and can be used as a drug to fight pathogenic bacteria.
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| 20. |
Many bacteria are ____________________ and play an important role in recycling carbon, nitrogen, and other elements, while other bacteria are ____________________ and assemble organic compounds from carbon dioxide, nitrogen, and other elements.
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Puzzle Solution – Cell Respiration
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