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Louis Pasteur's Contributions

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Questions and Answers

What is one of the characteristics used to classify viruses?

Number of cells infected

Type of genetic material (correct)

Type of disease treated

Method of transmission

What is a unique feature of viruses?

They are obligate intracellular parasites (correct)

They can infect any type of cell

They can replicate outside a host cell

They have a fixed shape

What is the first step in the multiplication cycle of a virus?

Adsorption (correct)

Synthesis

Uncoating

Release

What occurs during the penetration stage of viral multiplication?

The entire virus or its nucleic acid enters the host cell Signup and view all the answers

What is the role of enzymes in the uncoating stage of viral multiplication?

They dissolve the envelope and capsid Signup and view all the answers

Where do DNA viruses replicate and assemble?

In the host cell's nucleus Signup and view all the answers

How are enveloped viruses released from the host cell?

By budding or exocytosis Signup and view all the answers

What is the primary difference between bacteriophages and other viruses?

They infect bacteria Signup and view all the answers

How many virions can be released from a single host cell?

Anywhere from 3,000 to 100,000 Signup and view all the answers

What is the approximate length of time for the entire multiplication cycle of a virus?

Anywhere from 8 to 36 hours Signup and view all the answers