Biology: Viruses

Do viruses contribute to organismal evolution?

• No they do not contribute to organismal evolution.

• Viruses have directly contributed to organismal diversity in a number of ways.

• It is thought that viruses may contribute but it is not known for sure.

• None of the above.

Researchers and physicians use the term ______________ to describe a disease that rapidly infects a large number of individuals over a widening area.

• Epidemic

• Limited

• Pandemic

• I don't Know

What is an example of a pandemic?

• Influenza also known as the Spanish Flu

• HIV/AIDS

• Native Americans losing 90% of their tribe

• Both A and B

Where do viruses come from?

• No one knows… but scientists are hypothesizing three sources

• Monkeys

• Parasites

• None of the Above

How many types of HIV are there?

• 6

• 1

• 2

• too many to count

What do scientists do when they suspect an outbreak?

• Identify the agent causing the illness

• Identify the origin

• Identify the symptoms

• First A, then B

Once a virus is isolated, what do biologist analyze?

• Mechanism

• Structure of Virion

• Both A and B

• None of the Above

Morphology in biology is the study of the _____, ______, and _____ of animals, plants, and microorganisms.

• Shape, Size, Structure

• Color, Size, DNA

• Shape, Structure, Smell

• RNA, DNA, Shape

How do Viruses enter the cell?

• Viruses cannot enter a cell

• Virion enters a target cell

• Attachment to a host cell and entry into the cytosol

• Both A and B

• None of the above

Who first proposed organizing viruses into seven gneral classes?

• Charles Darwin

• David Baltimore

• Robert Koch

• Jean Baptiste Lamarck