Enter the answer in the space provided. The chart lists a few structural characteristics of viruses. 1. Viruses are extraordinarily small in size. 2. Viruses are not specific to their hosts. 3. Viruses contain either DNA or RNA as genetic material. 4. Viruses lack cellular organization. Based on the information, enter the number of the characteristic that explains why viruses are unable to reproduce
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Viruses being small in size does not directly explain why they cannot reproduce on their own. Show more…
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Choose all that apply Viruses are non-living Viruses are visualized using a light microscope Viruses have DNA and RNA inside their capsid Viruses can be single or double-stranded Viruses can have a DNA or RNA genome Viruses never contain enzymes - just genetic material and a protein coat Viruses have a host range determined by attachment proteins and permissibility Antibiotics can have a profound impact on viral infections Viruses always go from DNA to RNA to Protein like their host cell Viruses always quickly kill a host cell upon replication
Supreeta N.
1. Viruses cannot reproduce on their own, without the help of a living cell. Explain the basics of how viruses make more viruses. 2. What type of virus infects bacteria? how do you enter this virus to the host bacteria and reproduces? How does it get out of the bacteria? 3. Explain the difference between lytic replication and lysogeny. 4. Compare and contrast the intracellular and extracellular state of a bacteriophage. 5. How do animal viruses enter their host and reproduce? How leave the host cell? 6. Compare and contrast the intracellular and extracellular state of an animal virus. 7. What is transduction? Explain the role of bacteriophages and their host bacteria in this form of horizontal gene transfer.
Madhur L.
Viruses display many of the characteristics of living organisms. In particular, they reproduce, creating new virus particles. During reproduction, viruses make copies of their genetic material, and some of the copies contain mutations that are beneficial to the virus. For example, HIV (human immunodeficiency virus], the virus that causes the disease AIDS (?cquired immunodeficiency ?ndrome] mutates so often that its surface proteins change faster than we can develop antiviral drugs. New drug-resistant strains of HIV are appearing constantly. However, viruses can reproduce only after entering a living cell of an organism, because viruses hijack the cell's machinery and use it to produce new viruses. Where does that combination of characteristics place viruses on the scale of nonlife to life? Are viruses living organisms? Nonliving? If neither of those categories fits the properties of viruses, how should they be classified?
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