Exam 25: Pathogenic Rna Viruses

An RNA that can be used by a ribosome to translate into protein is (double/positive/negative) strand RNA.

Infection by all influenza strains can be prevented with vaccines.

The "orphan" family of dsRNA viruses that cause respiratory and enteric infections is (Rhinoviridae/Rhabdoviridae/Reoviridae).

Which of the following cells are a major reservoir for HIV?

Public health scientists discover and become concerned about a new strain of RNA virus among farm animals, especially geese and pigs, in the Midwest. Each virion is composed of lipid, helical proteins, and multiple pieces of RNA. This new virus may be

Deltavirus (hepatitis D virus) requires co- infection with to produce infectious virions.

Why was the discovery of reverse transcriptase a momentous event in biology?

A scientist discovers a new virus affecting birds. After isolation, the virus is characterized as having single- strand RNA in an icosahedral capsid and an envelope. To which of the following virus families might this new virus belong?

The causes a T cell leukemia.

Acute liver disease known as (enteric/infectious/serum) hepatitis is spread by the fecal- oral route and is caused by a picornavirus.

Diarrhea, nausea, and vomiting are signs and symptoms associated with which of the following viruses?

A child has a mild fever and a macular rash primarily on the torso. No lesions are evident in the mouth, and the child has not complained of pain. Which of the following diseases might the child have?

Which of the following RNA virus families include the smallest viral pathogens in animals?

Which of the following viruses is considered a childhood disease, was first identified by a German physician, and is known to cause "three- day measles"?

Which of the following cells is NOT infected by HIV?

Which of the following viruses can establish a chronic infection of the liver which may progress to liver cancer?

A common complication of measles in adults, subacute sclerosing panencephalitis, could be a cause of diabetes mellitus.

Ebola and Marburg viruses are emerging pathogens that cause life- threatening (encephalitis/diarrhea/hemorrhaging) and can be transmitted in body fluids.

Jonas Salk developed a(n) (attenuated/inactivated/subunit) polio vaccine in 1955.

Which of the following enzymes allows retroviruses to transcribe DNA from ssRNA?