What Are Viruses?
Are viruses small or large?
What is small?
Where is the origin of the word virus from?
Latin
No virus can live on dry surfaces with a humidity of less than __ percent
What is 10 percent?
What are the three theories of where viruses came from, called?
What is The Progressive Hypothesis, The Regressive Hypothesis, The Virus-First Hypothesis?
Name two characteristics of life
The cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth, and development, adaptation through evolution.
What can viruses infect?
What are plants and animals?
When was Yellow Fever discovered?
1901
What is a virus that is very contagious called?
Pandemics
What does the Virus-First Hypothesis state?
What is viruses could have evolved from complex molecules of protein and nucleic acid before cells first appeared on earth?
Why can viruses not maintain homeostasis?
They do not have organelles
True or False? Antibodies work on viruses
False
What are viruses? (bacteria, fungi, protists, plants, or animals)
Neither!!
Can pandemics spread worldwide?
Yes
What does the Regressive Hypothesis state?
What are viruses are remnants of cellular organisms?
Are viruses living, why/ why not?
(Answers vary)
What are viruses made up of?
Genetic materials like DNA and are protected by a coating of protein.
Name two examples of viruses
Influenza, Common cold, Measles, Mumps, Yellow fever, Hepatitis
Can viruses survive in air and water?
Yes
What does the Progressive Hypothesis state?
Viruses arose from genetic elements that gained the ability to move between cells
Name two characteristics of a virus.
Do not have an organized cell structure, have no cell nucleus, typically have one or two strands of DNA or RNA, covered with a protective coat of protein called the CAPSID, inactive when not inside a living cell, but are active when inside another living cell.
Viruses are ____ that need a ___ in order to survive.
Microbes, Host
Who discovered the first virus?
Walter Reed
Name at least three ways viruses can be spread.
Shaking hands, touching food, through water, or through the air when a person coughs or sneezes.
Name one fact from the video
(Answers vary)
What is the protective coat of protein around a virus called?
What is CAPSID?