Exam 7: Viruses and Other Acellular Life

Prion diseases

Which of the following instruments is required to see viruses?

The protein syncytin is

With respect to bacteriophage lytic and lysogenic cycles, which of the following statements is correct?

To eradicate a virus like West Nile virus, one would need to control the populations of its mosquito vectors. Why?

Animal cells and viruses are in an ongoing 'arms race' to prevent and facilitate infection, respectively. Of the following evolved changes to the host, which do you think would be most effective at limiting viral infection?

Why do viruses often seem to emerge from nowhere to become major public health scares in Canada?

A viroid is

In hospitals, multi-drug resistant bacterial strains that are not destroyed by antibiotics are a major issue threatening human life. One strategy to treat these might be

Which of the following descriptions of a virus is correct?

After reading the paragraph, answer the question(s) that follow(s). Generally, we think of viruses as nasty little bits of business that arrive unwanted, take over our cellular functions, and then move along to their next victim. Recently, however, it was discovered that the human genome actually contains about half a million 'viral fossils.' Indeed, about 8% of human DNA appears to originate from viral DNA that became permanently incorporated into the human genome. And furthermore, in some cases, identical viral fossils have been found in the chimpanzee genome. These incredible findings suggest that we might need to take a broader view of how viruses and people truly interact and have done over the millennia. -These observations also suggest that

After reading the paragraph, answer the question(s) that follow(s). Generally, we think of viruses as nasty little bits of business that arrive unwanted, take over our cellular functions, and then move along to their next victim. Recently, however, it was discovered that the human genome actually contains about half a million 'viral fossils.' Indeed, about 8% of human DNA appears to originate from viral DNA that became permanently incorporated into the human genome. And furthermore, in some cases, identical viral fossils have been found in the chimpanzee genome. These incredible findings suggest that we might need to take a broader view of how viruses and people truly interact and have done over the millennia. -Based on these observations we might conclude that, were we able to wipe out all viruses from the face of the earth, then

The genetic reshuffling of DNA from multiple viruses to create new and sometimes deadly viruses is an example of

Viral 'early genes' are genes that are involved in

In mammals, viruses are able to move about the body in the blood. Plants do not have blood or arteries or veins, so how do viruses move from cell to cell?