2012 I&I exam

Question 1

What type of cells is the most common in the cortex of the Lymph Node?

a. Macrophage
b. T lymphocyte
c. B Lymphocyte

Answer 1

c. B Lymphocyte

Question 2

Which of the following best describes the thymus?

a. It is active during fetal life
b. It remains active throughout life
c. It attains functional maturity at puberty
d. It is most functional during the fifth decade of life

Answer 2

a. It is active during fetal life

Question 3

What can you find in the white pulp?

a. fibro-elastic dense irregular tissue
b. Germinal Centers
c. Hassall’s corpuscles

Answer 3

b. Germinal Centers

Question 4

Which TWO of the following epithelioreticular cells contribute to the maturation of T Cells?

a. type I epithelioreticular cells
b. type II epithelioreticular cells
c. type IV epithelioreticular cells
d. type V epithelioreticular cells

Answer 4

b. type II epithelioreticular cells
&
d. type V epithelioreticular cells

Question 5

What type of cells line the splenic sinuses?

a. round cells
b. elongated cells
c. star-shaped cells

Answer 5

b. elongated cells

Question 6

Khalid, a 20-year old college student, is a sensation seeker and engages in physical and social challenges associated with health-related behaviors that may put him at risk of acquiring an STD. What is the characteristic associated with Khalid’s behavior?
A. He underestimates the risk involved
B. Has siblings with a “sensation seeker” personality
C. He’s an idiot

Answer 6

A. He underestimates the risk involved

Question 7

An infection has a reproductive rate of 1. Which of the following is true?

a. the infection is epidemic
b. the infection is pandemic
c. the infection is endemic

Answer 7

c. the infection is endemic

Question 8

A child presented with recurrent infections. He suffered from eczema and had bloody diarrhea. A blood count revealed thrombocytopenia. What immune defect is this?

a. Hyper IgM syndrome
b. Wiskott Aldrich syndrome
c. Catch 22 anomaly
d. Chédiak Higashi syndrome

Answer 8

b. Wiskott Aldrich syndrome

Question 9

Intervillositis with pigmentation in Macrophage of Fibrin deposit and prominent cytotrophoblast. What organism causes this condition?

Answer 9

Plasmodium intrauterine

(Plasmodium intrauterine infection is characterized by a large number of macrophages and histiocytes between the villi and the production of the malaria pigment called hemozoin, which prevents the toxic effects of heme)

Question 10

During lab diagnosis, the result was Intranuclear inclusions with fusion of epithelial cells. What is the causative microorganism?

a. Cytomegalovirus
b. Herpes Simplex Virus
c. Human Papilloma Virus

Answer 10

b. Herpes Simplex Virus

Question 11

How do we prevent a respiratory infection?

a. N95 Respirator Mask
b. N99 Respirator Mask

Answer 11

a. N95 Respirator Mask

Question 12

Which drug can cause lipodystrophy?

a. Maraviroc
b. Raltegravir
c. Saquinovir

Answer 12

c. Saquinovir

protease inhibitor

Question 13

What is most common in burn patients?

Answer 13

Pseudomonas aeruginosa

Question 14

Which country has a prevalence of both types of urinary and intestinal schistosomiasis?’

a. china
b. egypt
c. brazil

Answer 14

b. egypt

Question 15

What is the most important virulence factor of yersinia pestis?

a. pilli
b. Capsule
c. V and W antigens
d. Yops

Answer 15

b. Capsule

Question 16

Which Method is best used for sterilization of Plasma Solutions?

a. Incineration
b. Autoclave
c. Membrane Filtration
d. Pasteurization

Answer 16

c. Membrane Filtration

Question 17

Where is the highest incidence of Yellow fever?

a. congo
b. GCC countries
c. south america
d. egypt

Answer 17

c. south america

Question 18

Which bacterium uses rats as the reservoir?

a. Bordetella pertussis
b. Yersinia pestis

Answer 18

b. Yersinia pestis

Question 19

What is responsible for anaphylactic reactions?

a. B cells
b. Mast cells
c. Macrophage

Answer 19

b. Mast cells

Question 20

Which complement attracts neutrophils to the infection site?

Answer 20

C3a

another exam says C5a

Question 21

Why do we change a toxin to a toxoid?

a. to increase immunogenicity
b. to decrease pathogenicity
c. to increase complement response

Answer 21

b. to decrease pathogenicity

Question 22

What does the antiviral “Fomivirsen” inhibit in a virus?

a. The Primary Stage of Protein Synthesis, which is mRNA Translation
b. The Primary Stage of Protein Synthesis, which is tRNA Translation
c. The Secondary Stage of Protein Synthesis, which is mRNA Translation
d. The Secondary Stage of Protein Synthesis, which is tRNA Translation

Answer 22

a. The Primary Stage of Protein Synthesis, which is mRNA Translation

Question 23

Which country has the highest absolute number of TB cases?

a. Africa
b. America
c. South East Asia
d. Nigera

Answer 23

c. SouthXEast Asia

a= highest incidence, not highest absolute number

Question 24

Which cell helps the spread of HIV to the central nervous system?

Answer 24

Macrophages

Question 25

How do you slow down proteolytic enzymes?

Answer 25

by cold temperature

Question 26

Where is meningococcal meningitis most frequent?

a. Egypt
b. America
c. South East Asia
d. Nigeria

Answer 26

d. Nigeria

Question 27

A-79-year-old man developed fever swelling pain in the knees 2 weeks ago; he attended his camel delivery. What is the causative organism?

a. Brucella abortus
b. Brucella melitensis
c. Brucella suis

Answer 27

b. Brucella melitensis

Question 28

Which bacterium is the Reservoir of cattle?

a. Brucella abortus
b. Brucella melitensis
c. Brucella suis

Answer 28

a. Brucella abortus

Question 29

What characterizes IgA?

a. Predominant in the RT
b. Predominant in the GIT
c. Predominant in the urinary tract

Answer 29

b. Predominant in the GIT

Question 30

Which of the people perceive themselves to have been at risk of HIV?

Answer 30

the worried well

Question 31

SubKPleural granulomatous nodule with granulomatous lymphadenitis. What is the causative microorganism?

Answer 31

Mycobacterium tuberculosis