Viruses Test '23

Last updated 2 months ago

13 questions

Instructions

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remember no copy and pasting!

What is a virus? (hint; structure and function)

a spike protein on it surface

an enzyme inside the virus

its genome - DNA or RNA

The genome of a virus is made of _______ or _______ 

envelope

capsid

wall

virus boundary

Virus do not change - they stay the same forever

Random mutations are made when their DNA or RNA is copied

Viruses can decide to become better at infecting people

Viruses mate with other viruses making offspring that are different than their parents

production/copying - viral DNA or RNA hijacks cell machinery to make more copies of the viral DNA or RNA and viral proteins
uncovering/release - viral capsid breaks apart & DNA or RNA and enzymes are released into cell
release - new viruses "bud" from cell membrane or the cell bursts to release viruses
entry/penetration of virus into host cell
assembly - viral DNA or RNA and viral proteins come together to make more virus particles
attachment of virus to host cell

allow for the virus to spread more quickly

protect those individuals who cannot get vaccinated by vaccinating enough people to prevent the spread of the infection

allows for only the unvaccinated to get infected

Increase animal population

it stops the virus from spreading even to unvaccinated people

It makes everyone immune

It completely eradicates the virus

It slows aging

People who are vaccinated will start spreading the virus

It doesn't matter - as long as a few people in the population are vaccinated, everyone will be protected

the virus will likely spread more quickly and create an outbreak or epidemic in the population

The rate of the virus transmission will decrease

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

a spike protein on it surface

an enzyme inside the virus

its genome - DNA or RNA

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

envelope

capsid

wall

virus boundary

Why do viruses change over time?

Virus do not change - they stay the same forever

Random mutations are made when their DNA or RNA is copied

Viruses can decide to become better at infecting people

Viruses mate with other viruses making offspring that are different than their parents

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

production/copying - viral DNA or RNA hijacks cell machinery to make more copies of the viral DNA or RNA and viral proteins

uncovering/release - viral capsid breaks apart & DNA or RNA and enzymes are released into cell

release - new viruses "bud" from cell membrane or the cell bursts to release viruses

entry/penetration of virus into host cell

assembly - viral DNA or RNA and viral proteins come together to make more virus particles

attachment of virus to host cell

What does herd immunity allow for?

allow for the virus to spread more quickly

protect those individuals who cannot get vaccinated by vaccinating enough people to prevent the spread of the infection

allows for only the unvaccinated to get infected

Increase animal population

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

it stops the virus from spreading even to unvaccinated people

It makes everyone immune

It completely eradicates the virus

It slows aging

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

People who are vaccinated will start spreading the virus

It doesn't matter - as long as a few people in the population are vaccinated, everyone will be protected

the virus will likely spread more quickly and create an outbreak or epidemic in the population

The rate of the virus transmission will decrease