HIV and the immune system

Descripción

undergraduate Microbiology Test sobre HIV and the immune system, creado por Beth Moore el 29/05/2015.
Beth Moore
Test por Beth Moore, actualizado hace más de 1 año
Beth Moore
Creado por Beth Moore hace casi 9 años
194
2

Resumen del Recurso

Pregunta 1

Pregunta
Which of the following does the HIV virus contain?
Respuesta
  • dsDNA
  • ssDNA
  • reverse transcriptase
  • ssRNA

Pregunta 2

Pregunta
What is the name of the viral receptor on the HIV virus envelope?
Respuesta
  • gp10
  • gp120
  • CD4
  • gp60

Pregunta 3

Pregunta
During which phase are a large number of virus particles produced?
Respuesta
  • Permissive
  • Lytic
  • Latent

Pregunta 4

Pregunta
Which of the following are thought to explain the CNS involvement with HIV?
Respuesta
  • Monocytes
  • Dentritic cells
  • Neutrophils
  • T-Helper cells

Pregunta 5

Pregunta
CD4 expression not sufficient for HIV infection
Respuesta
  • True
  • False

Pregunta 6

Pregunta
Approximately how long may it take for antibodies to the HIV virus to be produced?
Respuesta
  • 3-6 days
  • 3-6 months
  • 3-6 years

Pregunta 7

Pregunta
By which cells are the intially high levels of HIV virus cleared?
Respuesta
  • T-helper
  • T-cytotoxic
  • Neutrophils
  • NK cells

Pregunta 8

Pregunta
Approximately how long is the asymptomatic stage of the HIV infection?
Respuesta
  • 1-2 years
  • 5-8 years
  • 10-12 years
  • 15-20 years

Pregunta 9

Pregunta
At which point is the HIV infection officially called AIDS?
Respuesta
  • When T-helper levels are below 200 per mm^3
  • When T-helper levels are below 2000 per mm^3
  • When T-helper levels are below 1000 per mm^3
  • When T-helper levels are below 20 per mm^3

Pregunta 10

Pregunta
Which of the following is true of the HIV-1 virus?
Respuesta
  • Its origin is in west africa
  • Its origin is in central africa
  • The likely source is sooty mangabees
  • The likely source is chimpanzees
  • It is between 50-100 years old
  • It is the least viralent of the two strains

Pregunta 11

Pregunta
In which way is HIV most commonly transmitted?
Respuesta
  • Unprotected sex
  • IV drug use
  • Breast feeding
  • Mother-foetus

Pregunta 12

Pregunta
How high is the mutation rate of HIV compared to the flu?
Respuesta
  • 100x more
  • 10x more
  • 60x more
  • 20x more

Pregunta 13

Pregunta
How does Azidothymidine help protect against HIV?
Respuesta
  • It inhibits reverse transcriptase
  • It binds to gp120
  • Binds to provirus

Pregunta 14

Pregunta
Which of the following therapies is the current most effective against HIV?
Respuesta
  • Passive immunisation using monoclonal antibodies
  • Azidothymidine
  • Combination therapy
  • Gene editing
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