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1 - 1 Correct A particle between 0.05 and 0.2 microns...

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1. Correct A particle between 0.05 and 0.2 microns containing genetic material enclosed in a protein coat is called a ____________________. Your Answer: virus The protective coat of a virus is often specific for the host that is infected. That means that viruses that infect birds or reptiles may not easily infect mammals. 2. Correct Identify the category of each cell type seen in the image below. Option Your Answer eukaryotic cell (animal) eukaryotic cell (animal) prokaryotic cell (rod-like) prokaryotic cell (rod-like) eukaryotic cell (plant) eukaryotic cell (plant)
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prokaryotic cell (spherical) prokaryotic cell (spherical) viruses viruses 3. Correct Viruses are not cellular and are often considered to be nonliving. Which of the following characteristics supports this conclusion? Your Answer: All these choices support this conclusion. Correct. 4. Correct A ____________________ is a kind of virus that can infect bacteria. Your Answer: bacteriophage It appears that viruses are able to infect just about any kind of host. Bacteria are not immune. 5. Correct Which of these is a viral disease? Your Answer: herpes Correct. 6. Correct What are viruses, viroids, and prions? Your Answer: all of the above Correct. 7. Correct
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What are viruses that attack bacteria called? Your Answer: bacteriophages Correct. 10. Correct ____________________ is the substance that differentiates a bacterial cell from an archaeal cell. Your Answer: plasma membrane composition Presence of peptidoglycan indicates that a cell culture has bacteria, but knowing which kind of bacteria is often very difficult. 11. Correct Classification of prokaryotes may use many kinds of traits. Which of these are NOT used in prokaryotic classification? Your Answer: type of nucleic acid Correct. Both prokaryotes and eukaryotes have the nucleic acids DNA and RNA. 12. Correct Which of the following traits allows some bacteria to survive extreme conditions for millions of years? Your Answer: endospore formation Correct. 13. Correct Hospitals must sterilize surgical instruments at very high temperatures and pressure because some bacteria can survive harsh conditions by making ________. Your Answer: endospores Correct. 14.
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Correct The technique that helps to classify bacteria based on their cell-wall construction is ____________________. Your Answer: gram-staining Without this simple technique, it may be much more difficult to classify bacteria. 15. Correct What type of bacteria are photosynthetic? Your Answer: Both the second and third answers above are correct. Correct. 16. Incorrect Which of the following enable plants to obtain a usable form of nitrogen? Your Answer: prions The Correct Answer: bacteria Incorrect. These proteins are infectious. 17. Correct Which of these is a bacterial disease? Your Answer: tetanus Correct. 18. Correct The simple form of cell division by which prokaryotic cells reproduce is called __________.
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