True about prions________________?

Related Mcqs:

1. Baby born to mother suffering from AIDS, all are true except________________?

   A. Failure to thrive
   B. Have infections
   C. 50% chances to have AIDS
   D. All are true

2. True about immune response of hepatitis B is__________________?

   A. Antibody of HBs Ag is associated with resistance to infection
   B. Antibody to HBC is not protective
   C. Highest titres of anti HBC are found in persistent carriers of HBs Ag
   D. CMI disappears soon after recover

3. True about HIV are all except______________?

   A. DNA virus
   B. Attacks CD4 cells
   C. Macrophages are the reservoir
   D. Decrease CD4 count in late stages

4. Mark true in following ?

   A. Hanta virus pulmonary syndrome is caused by inhalation of rodent urine and faces
   B. Kyanasur forest disease is caused by bite of wild animal
   C. Lyssa virus is transmitted by ticks
   D. None of the above

5. Prions true is____________?

   A. Readily inactivated by autoclave at 121 C
   B. Evokes strong immunogenic reaction
   C. Sensitive to most chemical sterilization
   D. Contains DNA/ RNA

6. Which of the following statement about P24 antigen of HIV is Not True ?

   A. It can be detected during the window period
   B. Free P24 antigen disappears after the appearance of IgM response to it:
   C. Virus load parallel P24 titre
   D. It remains during asymptomatic phase

7. Leptospirosis, all are true except______________?

   A. Faeces & urine of rodents is the cause
   B. Onset of IgM in 2 days
   C. Incubation period is 10 days
   D. It is sensitive to penicillin

8. All are true about widel test except________________________?

   A. Base lines differ depending on the endemicity of the disease
   B. O antibodiest last longer and hence is not indicative of recent infection
   C. H antigen cannot differentiate between subtypes
   D. High titre value in a single widal test is not confirmative

9. All are true about bordetella pertussis except______________?

   A. Most common cause is B. Petrussis
   B. It may occur in children and young adult after vaccination
   C. Bacteria culture from nasopharyngeal swab is the definitive diagnosis
   D. Presence of antibodies in serum in diagnostic of the disease

10. The following statement is true regarding fungal infection__________________?

    A. Dermatophyte infection are exclusively man to animal
    B. Rhinosporidium causes deep infection in man
    C. albicans is not pathogenic to lab animals
    D. Candida infection is usually endogenous