EBK BIOLOGY
5th Edition
ISBN: 9780133954425
Author: Maier
Publisher: YUZU
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Chapter 20, Problem 5LTB
Summary Introduction
Introduction:
A virus can be defined as a biological agent that reproduces inside the living cells of the hosts. Viral replication is a process which involves the formation of biological viruses in the target host cells during the infection process. When there is a viral infection, the host cell produces thousands of similar copies of the original virus at an unexpected rate.
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- Why can a virus multiply? Write in a 200-words (not in bulleted form please and thanks!)arrow_forwardClass V viruses carry their own polymerases within their viral particles: why is this necessary?arrow_forwardLyme disease or zika virus https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5729143/ https://www.hopkinsmedicine.org/zika-virus/what-is-zika-virus.html Which virus are you more concerned about? Some questions to think about for your answers: Are there available treatments? Be a health care provider: What would you recommend for your patients to avoid these viruses? Do your recommendations change in the mists of the Covid pandemic?arrow_forward
- Name 1 cellular process that some viruses exploit to enter cells. Give an example of a virus that uses this process and explain in 2-3 sentences how the virus exploits that processarrow_forwardPart B - Viral Classification: The Baltimore Scheme The Baltimore classification scheme is based on the relationship between the virus' genome and its mRNA. For the following choices, indicate which viruses would fall into each classification: 1) require reverse transcriptase to copy the information in their own genome to DNA; 2) can replicate and be transcribed in the same manner as the cell's own genetic material; and 3) a replicative form of DNA must be produced and is used for both replication and transcription. Drag and drop choices to the bins they describe. double-stranded DNA viruses Requires reverse transcriptase double-stranded RNA viruses retroviruses double-stranded DNA viruses that have an RNA intermediate Functions similarly to cell's own genetic material plus-strand RNA viruses minus-strand RNA viruses Reset Help plus-strand DNA viruses Uses a replicative form of DNAarrow_forwardViruses Can Be __________ and Counted in Plaque ____________ .arrow_forward
- Place the stages of the viral life cycle in their correct order. ____ Attachment ____ Lysis ____ Biosynthesis ____ Maturation ____ Penetrationarrow_forwardThe cell is the basic unit of all living things, and viruses which are generally not considered living but have the ability to infect cells. Describe how the structure of a virus compares to the structure of a cell. You should explain (not list) at least two similarities and two differences between features of cells and viruses including a brief explanation of the function of those structures. Explain why viruses need cells.arrow_forwardViruses structurearrow_forward
- You are arguing with one of your classmates. They say viruses are living, you say they are not. What argument would you give that they are non-living entities? – Think about the structure and function of viruses. 3 sentences pleasearrow_forwardWhich of the following highly contagious viruses is a single-stranded ribonucleic acid (RNA) virus with a helical capsid and envelope and is transmitted by coming in contact with respiratory secretions? "This is a highly contagious respiratory illness transmitted when an infected person coughs or sneezes virus particles into the air," the health department said in a written statement. "It's so contagious that if one person is sick and spreading measles, nine out of 10 people around them who aren't immune will get it, too." Group of answer choices a. Measles b. Parvovirus c. Coxsackie virus A d. Rhinovirusarrow_forwardAnswer the following 1.Are viruses living or non-living organisms? 2. What is the difference between HIV and AIDS? 3. HIV is classified as a retrovirus. What are retroviruses? 4. In your own words, provide a short summary of the HIV replication cycle. 5. Why is reverse transcriptase an important enzyme in the replication cycle of HIV? 6. In the chapter about enzymes, we have discussed how drugs are basically inhibitors. There are currently a multitude of Antiretroviral therapy (ART or ARV) options available to people living with HIV (PLHIV) so that the viral replication is suppressed and does not progress to AIDS. What do you think these drugs target? Discuss briefly. 7. SARS-CoV-2, the virus that causes CoVid-19, belongs to the Coronaviridae family. Viruses under this family have a genome made of single-stranded positive-sense RNA. Is this similar to the viral genome of HIV? If so, do you think that – in theory – they would have similar replication cycles? 8. In your own opinion, do…arrow_forward
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