Which of the following disease/s is/are due to prions in humans?
a) Creutzfeld-Jacob Disease
b) Gerstmann-Straussler-Scheinker syndrome
c) fatal familial insomnia and Alper syndrome
d) all of these
Which of the following is the most common disease due to prions in humans?
a) Alper syndrome
b) Gerstmann-Straussler-Scheinker syndrome
c) fatal familial insomnia
d) Creutzfeld-Jacob Disease
Explanation: Creutzfeldt-Jakob disease (CJD) is a rapidly progressive, invariably fatal neurodegenerative disorder believed to be caused by an abnormal isoform of a cellular glycoprotein known as the prion protein.
Prion diseases may manifest as…….
a) sporadic disorders
b) genetic disorder
c) infectious disorder
d) all of these
Human might be infected by prions in ….ways.
a) 2
b) 3
c) 5
d) 7
Explanation: 1. Acquired infection such as surgery, transplant etc 2. Apparent hereditary mendelian transmission where it is autosomal and dominant trait.
Viroids are even simpler than virus and are small……..
a) DNA
b) RNA
c) proteins
d) all of these
Viroids are the generally cause of some …….diseases.
a) animals
b) pets
c) plants
d) all of these
Explanation: such as potato spindle- tuber disease cucumber fruit citrus exocortis disease and cadang-cadang (coconut)
