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Understanding Viruses

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Questions and Answers

What did Dmitri Ivanovsky research between 1887 and 1890?

The discovery of bacteriophages

The disease-causing destruction of plants (correct)

The replication of viruses

The structure of electron microscopes

What was the first virus to be discovered?

Tobacco mosaic virus (TMV) (correct)

Colorado tick fever virus

Human immunodeficiency virus (HIV)

Poliovirus

What year was the first electron microscope built?

1931 (correct)

1890

1887

1948

What is one key difference between bacteria and viruses?

Bacteria are living organisms, while viruses are nonliving particles Signup and view all the answers

What is a type of virus that infects and replicates within bacteria?

Bacteriophage Signup and view all the answers

What did Martinus Beijerinck call the infecting organisms?

Viruses Signup and view all the answers

What is the estimated ratio of viruses to bacteria?

10 to 1 Signup and view all the answers

What did Dmitri Ivanovsky filter out of the infectious agent solution?

Bacteria Signup and view all the answers

What year was the first image of poliovirus taken?

1952 Signup and view all the answers

What was developed in 1985?

Polymerase chain reaction (PCR) Signup and view all the answers