Quiz
Influenza
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Perguntas do quiz (19)
1What is the infection rate of influenza in the general population?
- A10-20%.
- B5%.
- C30-80%.
- D100%.
2If a person doesn't have symptoms of influenza, but is infected by the virus, this may be a sign that:
- ATheir body is too strong to worry about influenza.
- BTheir body is not fighting the infection, and interferon is not activating.
- CInfluenza no longer has any symptoms.
- DInfluenza has already destroyed the entire immune system.
3Influenza is commonly transmitted by respiratory droplets. One respiratory droplet (from sneezing or coughing) can have up to:
- A100 virions per droplet.
- B5,000 virions per droplet.
- C1,000,000 virions per droplet.
- D600,000 virions per droplet.
415th century Italian scholars thought influenza was "malathia influenzae per le stelle', or 'a disease influenced by the stars'. This was because:
- AInfluenza is a seasonal virus with predictable peaks.
- BThe rashes on influenza patients looked like constellations.
- CThey thought the gods cursed humanity with influenza.
- DInfluenza was thought to only be transmitted at night under starlight.
5During the Spanish Flu, people were primarily 'hospitalized' to:
- AUndergo treatment procedures.
- BQuarantine them from uninfected citizens.
- CContribute to research.
- DCatalogue their symptoms.
6The Spanish Flu, unlike most common influenza, had an extremely high death rate in this group of people:
- AChildren.
- BYoung adults.
- CElderly.
- DMiddle aged.
7The influenza virus is:
- AA segmented virus made out of 8 RNA segments.
- BA non-segmented virus made out of a DNA strand.
- CA segmented virus made out of 3 RNA segments.
- DA non-segmented virus made out of an RNA strand.
8Haemagglutinin (HA) is the influenza's way of binding to the cell, and Neuraminidase (NA) is how it cuts itself out of the cell.
- AVerdadeiro
- BFalso
9Because influenza is an RNA virus with no proofreading mechanisms, it:
- AHas a high error rate of 1:5,000 nucleotides.
- BHijacks the DNA polymerase repair mechanisms.
- CIs rejected by cells most of the time.
- DMutates very slowly and infrequently.
10If we were out of flu season, and best wanted to prepare for the influenza strain we would be facing the next flu season, we would:
- ATry to force the current influenza to mutate, and see what it turns into.
- BObserve influenza in the opposite hemisphere.
- CGet everyone vaccinated for the previous year's influenza strain.
- DStart working on the formula for everlasting summer, so flu season never comes back.
11Antigenic drifts are more likely than antigenic shifts to cause pandemics.
- AVerdadeiro
- BFalso
12A strain of H1N1 from the 1920s, one of the first recorded instances of antigenetic shift, was also known as:
- AThe Spanish flu.
- BPertussis.
- CThe Diptherian flu.
- DThe bird flu.
13This group of animals experiences the greatest variety of HA and NA subtypes:
- ABirds.
- BCows.
- CPigs.
- DHorses.
14Reassortment of a virus is when:
- AThe human genome reassorts its immune system and becomes immune to the virus.
- BMultiple viruses are mixed together to create a new virus - commonly happens in pigs.
- COne virus changes from a non-segmented virus to a segmented virus.
- DA virus adjusts its surface proteins to allow access into cells.
15H5N1 attacks the lower respiratory tract. This makes it:
- ASpread slowly, with high lethality.
- BSpread quickly, with low lethality.
- CSpreads slowly, with low lethality.
- DSpreads quickly, with high lethality.
16Before 1997, we had never seen this HA subtype occur in humans:
- AH1.
- BH2.
- CH3.
- DH5.
17Which of the following groups is NOT more likely to have severe symptoms from the seasonal flu?
- AImmuno-compromised.
- BBabies.
- CElderly over 65 years.
- DFarmers.
18Some of the major causes of influenza virus-associated death are:
- ABacterial pneumonia and cardiac failure.
- BAssassination.
- CBacterial pneumonia and exhaustion.
- DCardiac failure and dehydration.
19Adsorption is when the influenza virus binds to this on the cell surface:
- Asiliac acid.
- BOselatamiir.
- CNeuraminidase.
- DH1N1.
Informações
- Descrição
- A quiz on the NATS1670 influenza discussion.
- Autor
- Brianna Murphy
- Idioma
- English
- Visualizações
- 191
- Etiquetas
- Avaliação
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