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Which of the following is a true statement about viruses?

Viruses contain DNA or RNA but not both

A phage is a virus that specifically infects _____

bacteria

Naked virions lack ______

an envelope

Which type of viral genome most closely resembles eukaryotic mRNA?

+ssRNA

Can an RNA virus ever integrate into a host cell genome?

Yes, but only if the virus is a retrovirus and has reverse transcriptase

Prions are

infectious proteins

Put the following steps of viral replication in the correct order. Synthesis, Attachment, Release, Penetration or Entry, Assembly

Attachment, Penetration or Entry, Synthesis, Assembly, Release

Most viral genomes are much smaller than the genomes of the cells they infect. Which of the following CANNOT be inferred from this statement?

Most viruses can infect only certain types of cells

Which of the following statements describes a generalist virus?

It infects many kinds of cells in many different hosts

The envelope found in some virus particles differs from the cytoplasmic membrane of cells in that.....

it does not perform the physiological functions carried out by the cytoplasmic membrane.

Both viruses and carcinogenic chemicals can cause tumors by....

disrupting cell division controls

An enveloped +ssRNA virus that contains the HIV virus. Reverse transcriptase is present.

Retroviridae

An enveloped dsDNA virus that contains the virus that causes chickenpox

Herpesviridae

An enveloped -ssRNA virus with a helical shape that contains the virus that causes hemorrhagic fever

Filoviridae

An enveloped dsDNA virus that contains the virus that causes Hepatitis B

Hepadnaviridae

An enveloped -ssRNA virus that contains the virus that causes rabies

Rhabdoviridae

A naked dsDNA virus that is polyhedral in shape and contains the virus that causes warts and tumors

Papovaviridae

A naked dsRNA virus that is polyhedral in shape that contains the viruses that cause respiratory and GI infections

Reoviridae

An enveloped +ssRNA virus that contains the virus that causes Rubella

Togaviridae

A naked +ssRNA virus that is polyhedral in shape and contains the virus that causes Hepatitis A

Picornaviridae

An enveloped -ssRNA virus with spikes and it contains the viruses that cause influenza

Orthomyxoviridae

An enveloped -ssRNA virus that contains the virus that causes mumps

Paramyxoviridae

An enveloped +ssRNA virus that contains the virus that causes Hepatitis C

Flaviviridae

An enveloped dsDNA virus that has a complex shape and contains the virus that causes smallpox

Poxviridae

A naked ssDNA virus that causes Fifth disease and anemia in immunocompromised patients

Parvoviridae

A naked ssDNA that causes a variety of respiratory infections

Adenoviridae

A naked +ssRNA virus that causes gastroenteritis (norovirus) and hepatitis E

Calciviridae

An enveloped +ssRNA virus that causes upper respiratory virus including SARS

Coronaviridae

An enveloped -ssRNA virus that causes Hepatitis D

Deltaviridae

An enveloped -ssRNA virus that causes Hanta pulmonary syndrome

Bunyaviridae

An enveloped -ssRNA virus that causes Lass fever

Arenaviridae

Which of the following does NOT describe a virus from the Herpesviridae family?

The virus that causes the common cold

Which of the following families of viruses contains the group of viruses that cause the common cold?

Picornaviridae

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