Log inSign up for FREE
Library

Viruses Test '23

Last updated almost 2 years ago
14 questions
remember no copy and pasting!
Required
5

What is a virus?

Required
3

Why are viruses considered "parasites" (obligate intracellular parasites)?

Required
5

In general, how does a vaccine work to protect against a viral infection?

Required
10

Write a summary of what you have learned about the SARS-CoV-2 virus... where did it come from? How does it infect people? What tissues/organs does it infect? How does it make people sick/cause their death?

Required
1

What does a virus use to attach to a cell that it is going to infect?

Required
2
The genome of a virus is made of _______ or _______
Required
1

Every virus has a rigid shell made of proteins called a ___________ that holds the genetic material and in some viruses, some enzymes.

1

Why do viruses change over time?

Required
6

Put the steps/stages of a typical viral life cycle in order

  1. entry/penetration of virus into host cell
  2. uncovering/release - viral capsid breaks apart & DNA or RNA and enzymes are released into cell
  3. production/copying - viral DNA or RNA hijacks cell machinery to make more copies of the viral DNA or RNA and viral proteins
  4. assembly - viral DNA or RNA and viral proteins come together to make more virus particles
  5. attachment of virus to host cell
  6. release - new viruses "bud" from cell membrane or the cell bursts to release viruses
Required
7
Other Answer Choices:
copying of viral proteins
release
uncovering
attachment
copying of viral genome (RNA)
assembly
entry
Required
1

What does herd immunity allow for?

Required
1

Why is immunizing a certain percentage of a population important for herd immunity?

Required
1

What happens if the percentage of immune individuals in a population drops below the herd immunity threshold?

Required
3

Extra Credit - What is special about the COVID-19 vaccines? How are they different than all previous vaccines? How do they work?