Viruses

Viruses

Compare and contrast the structures of viruses to cell, describe viral reproduction, and describe the role of viruses is causing diseases such as human immunodeficiency virus (HIV) and flu.

Multiple Select

Click all the characteristics of a virus

• Living

• Non-living

• Able to grow and reproduce on their own

• Does not grow and can not replicate without the host

Open Ended

What are the structures or parts of a virus?

Multiple Choice

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. Once a virus gains entry to the body, it invades a host cell in order to -

• deactivate the host cell's defenses

• synthesize antibodies for defense

• metabolize host processes and grow

• access cellular processes for replication

Multiple Choice

Can you treat a virus after you are already infected?

• No, you can only prevent getting the virus in the first place by getting a vaccine.

• Yes, you give an infected person the vaccine which kills the virus.

Multiple Choice

How does a vaccine work?

• The vaccine is like medicine that kills the virus so that it doesn't infect any more cells.

• The vaccine is a dead or weak version of the virus that lets your body create antibodies (like soldiers who already know how to fight the specific virus in case you actually get it!)

Multiple Choice

Why do people with HIV usually get aids?

• The HIV virus turns into the aids virus

• HIV attacks immune cells.

  low immune cells = aids

• HIV makes more immune cells.

  High immune cells = aids

Multiple Choice

True/False: A virus can only make copies of itself using a living host cell.

• True

• False

Multiple Choice

Which virus replication cycle is LONGER?

• Lysogenic

• Lytic

Multiple Choice

Which virus replication cycle is SHORTER?

• Lysogenic

• Lytic

Multiple Choice

Which virus replication cycle integrates into cell DNA so you do not see symptoms for a while?

• Lysogenic

• Lytic

Multiple Choice

Which virus replication cycle starts making copies of viruses and kills cells right away so you see symptoms very early on?

• Lysogenic

• Lytic

Multiple Choice

Is a virus alive?

• Yes

• No