Http www hhmi org biointeractive virus explorer

SCIN130 Lab 5: Viruses SCIN 130 Lab 5: Viruses General Instructions Be sure to read the general instructions from the Lessons portion of the class prior to completing this packet. Remember, you are to upload this packet with your quiz for the week! Background Most people have heard of influenza, HIV, and rabies. Zika, human papillomavirus (HPV), and Ebola have recently made headlines. Adenovirus, T7 virus, and tobacco mosaic virus are familiar to researchers and science students. What do these viruses have in common? And how are they different? V1 04.2018 Jones Page 1 of 8 SCIN130 Lab 5: Viruses Specific Lab Instructions Name: Clorissa Jones Date:05Jul20 Go to: http://media.hhmi.org/biointeractive/click/virus-explorer/index.html And work through the following questions. Let’s first make sure you understand what information is presented, and how it is. Click on the “About” tab at the bottom of the page. Read the information in this section, then answer the following: 1. List four (4) ways in which viruses can differ from each other 1. 2. 3. 4. 2. This interactive uses several abbreviations. Fill in what each abbreviation stands for in the table below. Abbreviation Description nm bp ss ds 3. Close the “About” window. V1 04.2018 Jones Page 2 of 8 SCIN130 Lab 5: Viruses 4. Locate the i next to each viral characteristic tab across the top of the page. Click on these icons and answer the questions in your own words (do NOT simply copy and paste from the site or you will not receive credit): a. Envelope: Not all viruses have an envelope. If a virus has this outer layer, explain how it forms. b. Structure: What determines the shape of the capsid, or core? c. Host(s): From the virus’ perspective, why is the host important? d. Genome Type: Viral genomes may vary by four characteristics of their genetic information. What are they? V1 04.2018 Jones Page 3 of 8 SCIN130 Lab 5: Viruses e. Transmission: Define the terms “vector” and “zoonotic.” f. Vaccine: What is one advantage of being vaccinated against a particular virus? V1 04.2018 Jones Page 4 of 8 SCIN130 Lab 5: Viruses 5. Virus Scavenger Hunt: Use the home page of the Virus Explorer and the various viral characteristic tabs across the top to answer the questions below. a. What is one difference between the rabies virus and the influenza virus? b. Of the nine viruses shown, which is the only one that infects plants? c. What is one characteristic that adenoviruses and papillomaviruses have in common? d. Recently, Zika virus has been in the news. Treatment of it is of particular concern. Why? V1 04.2018 Jones Page 5 of 8 SCIN130 Lab 5: Viruses 6. Locate the + next to each virus name. Click on these icons and answer the questions below associated with selected viruses. a. Rabies virus: People often associate rabies virus with dogs. Why is this incomplete? b. Influenza virus: Influenza virus has a segmented genome. Why is this an advantage for the virus? c. HIV: HIV infects immune cells. Why is this a disadvantage to the infected person? V1 04.2018 Jones Page 6 of 8 SCIN130 Lab 5: Viruses d. Zika virus: Why is Zika virus of great concern to pregnant women? e. Tobacco mosaic virus (TMV): Name one unique characteristic of the tobacco mosaic virus. V1 04.2018 Jones Page 7 of 8 SCIN130 Lab 5: Viruses 7. How big is a virus anyway? Click on the “Show Relative Sizes of the Viruses” tab at the bottom of the interactive home page. 8. Answer the following questions using the white scale bar at the bottom of the page for size comparison. Remember to include your units!! a. Using the white scale bar provided, approximately how long (tall) is TMV? b. What is the approximate diameter of HIV? c. What is the approximate diameter of Zika virus? Adapted from: Click and Learn “Virus Explorer” (2016). Virus Explorer Worksheet. HHMI Biointeractive Teaching Materials. V1 04.2018 Jones Page 8 of 8 ...