Viruses

Gaiser Life Science

KnowWhat do you know about viruses?

Evidence

Page #

“I don’t know anything.” is not an acceptable answer.Use complete sentences.

After listening to the PowerPoint lecture, come back here and list evidence to explain why your answer to the above question is or is not a good answer. You may also use other outside sources to help you respond.

Clarifying ?s Information

Page #

Viruses

virus - small, non-living particles that invade and reproduce inside cells

Non-living - don’t use energy to grow or respond to surroundings – no respiration

How do they get energy?

host - Living organism that provides energy

parasite - Organism that lives on or in a host – is almost always harmful to the host

bacteriophage - Virus that infects bacteria

structure - outer protein coat with genetic material inside

reproduction 1. Virus attaches to cell and enters cell.2. Genetic material takes over cells functions.3. Cell produces virus’ genetic material – virus uses cell to reproduce.4. Cell becomes too full of viruses. Cell ruptures and releases new viruses.

Clarifying ?s Information

Page #

Viruses

types of viruses

active - Virus immediately takes over and destroys cell.

hidden - Virus remains dormant inside the cell, then takes over.

Disease causing viruses

Virus caused diseases are often deadly, usually infectious (means you can catch them from others), and frequently incurable. Some viruses are preventable with vaccination though.

Examples: Some deadly virus diseases are AIDS, polio, smallpox, ebola, and rabies

Examples: Some relatively harmless virus diseases are the common cold, chicken pox, warts, and cold sores.

FYI: Different people can be affected differently by virus diseases. Young babies have underdeveloped immune systems. Elderly people sometimes have weakened immune systems. AIDS victims have compromised immune systems. All of these groups can be at greater risk when contracting virus diseases.

Influenza – AKA flu

Flu viruses mutate rapidly and change from year to year. They cause fevers and aches and pains for approximately two weeks in the victims. The flu can often be prevented with an vaccination.

vaccine - Activates the body’s natural defenses by introducing dead or weakened viruses into the body.

Summary:

Clarifying ?s InformationViruses

Page #

virus - small, non-living particles that invade and reproduce inside cells

Non-living - don’t use energy to grow or respond to surroundings – no respiration

How do they get energy?

host - Living organism that provides energy

parasite - Organism that lives on or in a host – is almost always harmful to the host

bacteriophage - Virus that infects bacteria

structure - outer protein coat with genetic material inside

reproduction 1. Virus attaches to cell and enters cell.2. Genetic material takes over cells functions.3. Cell produces virus’ genetic material – virus uses cell to reproduce.4. Cell becomes too full of viruses. Cell ruptures and releases new viruses.

Clarifying ?s InformationViruses

Page #Summary:

types of viruses

active - Virus immediately takes over and destroys cell.

hidden - Virus “hibernates” inside cell, then takes over.

Disease causing viruses

Virus caused diseases are often deadly, usually infectious (means you can catch them from others), and frequently incurable. Some viruses are preventable with vaccination though.

Examples: Some deadly virus diseases are AIDS, polio, smallpox, ebola, and rabiesExamples: Some relatively harmless virus diseases are the common cold, chicken pox, warts, and cold sores.

FYI: Different people can be affected differently by virus diseases. Young babies have underdeveloped immune systems. Elderly people sometimes have weakened immune systems. AIDS victims have compromised immune systems. All of these groups can be at greater risk when contracting virus diseases.

Influenza – AKA flu

Flu viruses mutate rapidly and change from year to year. They cause fevers and aches and pains for approximately two weeks in the victims. The flu can often be prevented with an vaccination.

vaccine - Activates the body’s natural defenses by introducing dead or weakened viruses into the body.

This PowerPoint was created by Tim Paterek from Charlene Shea’s lab This PowerPoint was created by Tim Paterek from Charlene Shea’s lab notes. All pictures came from Google Image Search. To fall within the Fair notes. All pictures came from Google Image Search. To fall within the Fair Use Guidelines, this PowerPoint must be used within the confines of the Use Guidelines, this PowerPoint must be used within the confines of the classroom and may not be published back onto the Internet unless the classroom and may not be published back onto the Internet unless the

pictures are removed.pictures are removed.