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33 terms

Micro Unit 4

STUDY
PLAY
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