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Virus Quiz

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Questions and Answers

What is a virus?

A type of bacteria found in all life forms

A non-infectious entity found in almost every ecosystem

A submicroscopic infectious agent that replicates only inside living cells (correct)

A type of organism that infects animals and plants

Who discovered the tobacco mosaic virus?

Dmitri Ivanovsky

Robert Koch

Louis Pasteur

Martinus Beijerinck (correct)

What encodes the structure of a virus?

Proteins and lipids

Carbohydrates

Inorganic molecules

Long molecules of DNA or RNA (correct)

What is the most numerous type of biological entity on Earth?

Viruses Signup and view all the answers

What is the study of viruses known as?

Virology Signup and view all the answers

Who proposed the taxon Monera as a phylum in 1866?

Ernst Haeckel Signup and view all the answers

When was the taxon Monera elevated to the rank of kingdom?

1925 Signup and view all the answers

Who introduced the three-domain system of taxonomy in 1977?

Carl Woese Signup and view all the answers

Which domains do the organisms found in kingdom Monera belong to under the three-domain system of taxonomy?

Archaea and Bacteria Signup and view all the answers

Why is the taxon Monera considered paraphyletic?

It does not include all descendants of their most recent common ancestor Signup and view all the answers