2013 I&I

Question 1

If a lymphatic nodule has a germinal center and outer corona in adults it is called ..?
A. Primary nodule
B. Secondary nodule

Answer 1

B. Secondary nodule

Question 2

Which of the following infections is toxin-mediated?
A. Scarlet Fever
B. Malaria

Answer 2

A. Scarlet Fever

Question 3

Which vaccine type shouldn’t be given to a patient who is B&T cell-deficient?

Answer 3

Live vaccine

Question 4

What do beta-lactams inhibit?
A. Folic acid synthesis
B. Bacterial cell wall synthesis

Answer 4

Bacterial cell wall synthesis

Question 5

What is the only vaccine that can be taken during pregnancy?

Answer 5

Tetanus toxoid

Question 6

Which of the following is a non-organ specific autoimmune disease?
A. Rheumatoid arthritis
B. Myasthenia gravis
C. Pernicious anemia

Answer 6

A. Rheumatoid arthritis

Question 7

Which of the following bacteria produce Extended-spectrum B-lactamases (ESBLs)?
A. K. pneumoniae
B. S. aureus

Answer 7

A. K. pneumoniae

(The OXA-type of beta-lactamases hydrolyzes oxacillin and other anti-staphylococcal penicillins. This makes K. pneumoniae and other enterbacteriaceae resistant to such antibiotics.)

Question 8

Funisitis during pregnancy is most probably caused by which of the following organisms? 
A. PID
B. Candida albicans
C. Syphilis
D. Staph epidermidis

Answer 8

B. Candida albicans

Question 9

Injecting normal immune globulins is used as prophylaxis against which of the following? 
A. Varicella
B. Rabies
C. Hepatitis A 
D. Hepatitis B

Answer 9

C. Hepatitis A

Question 10

Travelers to notorious areas are advised to sleep in bed nets as prevention against which disease?

Answer 10

Malaria

Question 11

Which of the following is transmitted by infected bone meals?

Answer 11

Anthrax

Question 12

Which of the following antibiotics is given as prophylaxis against meningococcal meningitis in pregnant women?
A. Ciprofloxacin
B. Ceftriaxone

Answer 12

B. Ceftriaxone

Question 13

Which is the best laboratory investigation for PUO?
A. Blood
B. Urine

Answer 13

A. Blood

Question 14

What should be done prior to sterilization to remove organic matter?

Answer 14

Cleansing

Question 15

The first signal to a T-Cell to start an immune response is? 
A. CD4 activation
B. CD80 activation
C. CD3 activation
D. CD28 activation

Answer 15

C. CD3 activation

Question 16

What substance is produced by mast cells in type 1 hypersensitivity reactions?

Answer 16

Histamine

Question 17

What is the causative agent of soft chancre? 
A. T. palladium
B. H. ducreyi
C. Syphilis
D. N. gonorrhoeae

Answer 17

H. ducreyi

Question 18

What is considered an innate immune barrier in the respiratory tract?

Answer 18

Cilia flushing

Question 19

Which of the following is considered a vulnerability factor that predisposes to risk-taking behavior?
A. Family disruption
B. Bad grades
C. Peer pressure

Answer 19

A. Family disruption

Question 20

A kidney transplant patient experienced coughing among other symptoms. The gallium scan showed diffuse uptake of Ga-67 in the lungs. What is the most likely diagnosis?
A. Graft rejection 
B. PCP
C. Lung cancer 
D. Lymphoma

Answer 20

B. PCP

Pneumocystis pneumonia

Question 21

What is the best method to diagnose CMV infection is a kidney transplant patient? 
A. PCR
B. Urine sample
C. Blood test
D. Biopsy

Answer 21

A. PCR

Question 22

Why is 70% alcohol better than 95% alcohol as a disinfectant?
A. To persist on the surface for a long period
B. Because additives are also used to enhance it’s function
C. 95% alcohol is stronger and more useful

Answer 22

A. To persist on the surface for a long period

95% alcohol evaporates quickly & doesn’t maintain a long period of contact

Question 23

What is used to diagnose toxoplasmosis in the fetus?
A. ELISA for IgM
B. ELISA for IgG
C. PCR

Answer 23

C. PCR