Review1 - 1 A particle between 0.05 and 0.2 microns...

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1. A particle between 0.05 and 0.2 microns containing genetic material enclosed in a protein coat is called a __________. Your Answer: d Correct Answer: virus 2. Identify the category of each cell type seen in the image below. Label Your Answer Correct Answer Comments 2.1 eukaryotic cell (plant) A. C. Eukaryotic plant cells have their functions compartmentalized into organelles and have a cell wall.
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2.2 viruses B. E. Viruses are quite small with only a protein coat, core proteins, and non-membrane- bound genetic material. 2.3 prokaryotic cell (spherical) B. D. Prokaryotic cells do not have organelles. They are categorized based on protein coat and shape. 2.4 eukaryotic cell (animal) A. A. Correct! 2.5 prokaryotic cell (rod-like) A. B. Prokaryotic cells do not have organelles. They are categorized based on protein coat and shape. 3. Viruses are not cellular and are often considered to be nonliving. Which of the following characteristics supports this conclusion? Your Answer: Viruses are unable to grow or divide. Correct Answer: All these choices support this conclusion. Incorrect. Although this is a nonliving trait of viruses, it is not the only one. Choose the best answer. 4. A __________ is a kind of virus that can infect bacteria. Your Answer: d Correct Answer: bacteriophage 5. Which of these is a viral disease? Your Answer: botulism Correct Answer: herpes Incorrect. This is a bacterial disease. 6. What are viruses, viroids, and prions?
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Your Answer: substances that can cause disease only after entering a host cell and taking over the nuclear machinery Correct Answer: all of the above This is not the only correct answer. 7. What are viruses that attack bacteria called? Your Answer: herpes viruses Correct Answer: bacteriophages Incorrect. Herpes viruses attack humans. 8. Identify the structures indicated on the following image of a virus particle. Label Your Answer Correct Answer Comments
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8.1 protein coat A. A. Correct! 8.2 envelope A. B. Remember that the envelope encloses the entire virus particle. 8.3 core proteins A. D. Core indicates an internal feature, rather than an external component. 8.4 genetic material A. C. Genetic material is usually protected from external environments, rather than an external feature. 9. Choose the correct stage descriptor for each step in HIV's invasion into the cell pictured below. Label Your Correct Comments
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Answer Answer 9.1 Viral DNA enters host nucleus. A. B. The viral particle must enter the cell, incorporate its DNA into the host nucleus, transcribe and then translate its DNA, assemble new viral particles, and get these new particles out of the host cell.
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