How does soap kill coronavirus? B. Why virus can not be washed off with water along? C. Why soap works better than hand sanitizer when killing viruses?
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A. How does soap kill coronavirus?
B. Why virus can not be washed off with water along?
C. Why soap works better than hand sanitizer when killing viruses?
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- a. Compare three characteristics of a bacterium and a virus.b. Why are viruses so hard to control?a. Since viruses lack metabolic enzymes, how can they synthesize necessary components? b. Name some enzymes that viruses may have for invading and completing their cycles.a. If you were involved in developing an antiviral drug, what wouldbe some important considerations? (Can a drug “kill” a virus?)b. How could multiplication be blocked?
- i. What is Viroid how these viruses infect plant cells? How it differ from animal virus? iv. If you are asked to culture virus how it proceeds and which type of conditions will be needed to grow virus cells? v. Which type of sterilizing agents can be used in preservation of animals cells/tissues? How can we kill all types of microbes and which types of techniques can be used?This is a product label for a germicide. HIV-1, HBV, and HCV are all viruses that can be found in the blood. Why does the label say you have to thoroughly clean blood and body fluids from surfaces before applying he gemicide? A The germicide probably smells really bad if it combines with blood or other body fluids. B If blood is present and you apply a germicide, you will have too much fluid to safely mop up. C Blood and other body fluids can interact with the germicide and prevent the germicide from killing pathogens.Question:- a. Describe the characteristics used to classify viruses. b. List five specific properties of viruses that distinguish them from bacteria. c. Discuss differences between proviruses, viroids, and prions, and the diseases they cause.
- Viruses: a. Describe the structure and composition of viruses. What are three reasons that they are different from cellular organisms? b. Describe what a lysogenic bacteriophage is and how it is different from a lytic bacteriophage. c. Describe what is similar and different about the lifecycle of a non-enveloped DNA animal virus compared to an enveloped animal retrovirus.Non-enveloped viruses are more resistant to changes in temperature, pH, and some disinfectants than enveloped viruses. a. True b. FalseCan i get a help answering this question: The case study tells you that the HIV virus exits the cell by budding, but how can you tell that just based on the structure of the HIV virus? (see attached for the case study)
- a. During which stages of an infectious disease does the host exhibit signs and symptoms? Is there a correlation between this and when a disease is communicable? b. Why are some viral diseases, like smallpox and polio, no longer seen in the United States? Why are many bacterial disease, like syphilis, no longer a death sentence? Think about how these two types of microbes infect humans. Why might we make an effort to treat viral diseases before infection but continue to treat bacterial diseases after infection? c. Based on the graph below, which pathogen is more virulent: Agent 1 or Agent 2? Explain. 100 Agent 1 LD5 = 400, Agent 2 LD50 = 600 25 100 200 300 400 500 600 700 800 900 1,000 Dose (organisms administered per animal) Percent mortality 75Does UV kill virus?B. The Strange Case of BeriBeri In 1887 a strange nerve disease attacked the people in the Dutch East Indies. The disease was BeriBeri. Symptoms of the disease included weakness and loss of appetite. Victims often died of heart failure. Scientists thought the disease might be caused by bacteria. They injected chickens with bacteria from the blood of patients with BeriBeri. The injected chickens became sick. However, so did a group of chickens that were not injected with bacteria from the blood of patients with BeriBeri. One of the scientists, Dr. Eijkman, noticed something. Before the experiment, all the chickens had eaten whole-grain rice, but during the experiment, the chickens were fed polished rice. Dr. Eijkman researched this interesting case. he found that polished rice lacked thiamine, a vitamin necessary for good health. 1. State the Problem. 2. What was the hypothesis? 3. How was the hypothesis tested? 4. Should the hypothesis be supported or rejected based on the experiment?…