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SCIN 130 AMU Lab 5 Viruses Introduction to Biology American Military University

  • Name of class: SCIN 130 Introduction to biology
  • Name of School: American Military University</br> American Public University
  • Posted By: Nicholas34

SCIN 130 AMU Lab 5 Scientific Method Introduction to Biology American Military University assistance is available on Domyclass

General Instructions

Step 1: Read and complete the Lesson for the week – both the Lecture and Lab portion found in the APUS online classroom! The information you acquire in this Lab will be included in your quiz for the week – so make sure you have it completed prior to taking the quiz!

Step 2: Complete all the activities in this lab instruction packet: SCIN 130 Lab 5: Viruses.  Work through the instruction packet step by step. Record your results in the worksheet as you progress through this instruction packet.

Step 3: You should save a copy of your completed lab with your name and lab # in the title. For example, if you are Felicetti and this is lab 5, you would title your document: FelicettiLab5.doc. You are then to add this as an attachment to the quiz for the week! 

Please note the following:

For any sections that request that you “take notes”, the notes should be in your own words summarizing information learned. You should not copy and paste information from the Internet including media and resources accessed in this lab. Directly copying and pasting information is considered plagiarism in this course.

When taking screenshots save with file name that has your last name, the lab number and the screenshot number. For example, for the first screenshot in lab 5 if your last name was Felicetti the file name would be FelicettiLab5Shot1.jpeg. It is important to follow this image labeling structure. Images submitted without proper labeling will be graded as a zero.

This lab instruction packet will be submitted with the quiz for the week when completed. Again, save the file with your name and the lab number as a Word document. For example, if this was Lab 5 and your last name was Felicetti the file name would be FelicettiLab5.docx. It is important to follow this file labeling structure. Files submitted without proper labeling are subject to a score of zero.

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?

Specific Lab Instructions

Name:     

Date:     

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.     

  • This interactive uses several abbreviations. Fill in what each abbreviation stands for in the table below.
Abbreviation Description
nm      
bp      
ss      
ds      
  • Close the “About” window.
  • 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):

  1. Envelope: Not all viruses have an envelope. If a virus has this outer layer, explain how it forms.
     
     
  • Structure: What determines the shape of the capsid, or core?
     
  • Host(s): From the virus’ perspective, why is the host important?
  • Genome Type: Viral genomes may vary by four characteristics of their genetic information. What are they?
     
  • Transmission: Define the terms “vector” and “zoonotic.”
     
  • Vaccine: What is one advantage of being vaccinated against a particular virus?
     
  • 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.
    • What is one difference between the rabies virus and the influenza virus?
     
  • Of the nine viruses shown, which is the only one that infects plants?
  • What is one characteristic that adenoviruses and papillomaviruses have in common?
     
  • Recently, Zika virus has been in the news. Treatment of it is of particular concern. Why?
     
  • Locate the + next to each virus name.

Click on these icons and answer the questions below associated with selected viruses.

     
  1. Rabies virus: People often associate rabies virus with dogs. Why is this incomplete?
    1. Influenza virus: Influenza virus has a segmented genome. Why is this an advantage for the virus?
     
  • HIV: HIV infects immune cells. Why is this a disadvantage to the infected person?
     
  • Zika virus: Why is Zika virus of great concern to pregnant women?
     
  • Tobacco mosaic virus (TMV): Name one unique characteristic of the tobacco mosaic virus.
     
  • How big is a virus anyway? Click on the “Show Relative Sizes of the Viruses” tab at the bottom of the interactive home page.
  • Answer the following questions using the white scale bar at the bottom of the page for size comparison. Remember to include your units!!
  1. Using the white scale bar provided, approximately how long (tall) is TMV?
  • What is the approximate diameter of HIV?
  • What is the approximate diameter of Zika virus?

Adapted from: Click and Learn “Virus Explorer” (2016). Virus Explorer Worksheet. HHMI Biointeractive Teaching Materials.