Viruses

What is the difference between a virus and bacteria?

• Viruses are larger than bacteria and can reproduce independently.

• Bacteria are smaller than viruses and require a host to reproduce.

• Viruses are smaller than bacteria and require a host to reproduce, while bacteria can reproduce independently.

• Bacteria can only survive in extreme environments, while viruses can survive in any condition.

Which of the following is true for both bacteria and viruses?

• Both contain genetic material.

• Both are made of cells.

• Both can reproduce independently.

• Both are visible under a light microscope.

What is the genetic material found in viruses?

• DNA only

• RNA only

• Both DNA and RNA

• Proteins

What is the role of a host cell in viral replication?

• The host cell provides the necessary machinery and environment for the virus to replicate.

• The host cell destroys the virus immediately upon entry.

• The host cell prevents the virus from replicating by producing antibodies.

• The host cell acts as a barrier to prevent the virus from entering.

What happens to the cell after the virus infects it?

• Often the cell dies.

• The cell becomes stronger.

• The cell multiplies rapidly.

• The cell produces more viruses.

What is a virus?

• A microscopic infectious agent that can only replicate inside a living host cell.

• A type of bacteria that causes infections.

• A large organism that can survive without a host.

• A chemical substance that can cure diseases.

What is the protein coat of a virus called?

• Capsid

• Envelope

• Nucleocapsid

• Peptidoglycan

Which is smaller?

• Bacterium

• Virus

• Fungus

• Protozoa

What is an example of a disease caused by a virus?

• Influenza (the flu)

• Strep throat

• Malaria

• Tuberculosis

Can a virus be cured with antibiotics?

• Yes, antibiotics can cure viruses.

• No, antibiotics are ineffective against viruses.

• Antibiotics can prevent viral infections.

• Antibiotics can reduce the severity of viral infections.