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Micro Ch 23

front 1

1) Which of the following statements about sepsis is FALSE?

A) Symptoms include fever and decreased blood pressure.

B) Lymphangitis may occur.

C) It can be treated with antibiotics.

D) It usually is caused by gram-positive bacteria.

back 1

D

front 2

2) Which of the following pairs is mismatched?

A) subacute bacterial endocarditis — alpha-hemolytic streptococci

B) acute bacterial endocarditis — Staphylococcus aureus

C) pericarditis — Streptococcus pyogenes

D) puerperal sepsis — Staphylococcus aureus

back 2

D

front 3

3) Which of the following is NOT a recognized form of anthrax?

A) cutaneous

B) inhalationial

C) septic

back 3

C

front 4

4) Which of the following is NOT typically treated with penicillin?

A) serious wounds at risk for gas gangrene

B) tularemia

C) patients at risk for rheumatic fever

back 4

B

front 5

5) Which of the following statements about tularemia is FALSE?

A) It is caused by Francisella tularensis.

B) The most common reservoir is rabbits.

C) It may be transmitted by arthropods.

D) It may be transmitted by direct contact.

E) It occurs only in California.

back 5

E

front 6

6) Which of the following is a symptom of brucellosis?

A) gastroenteritis

B) relapsing fever

C) undulant fever

back 6

C

front 7

7) Which of the following is NOT transmitted in raw milk?

A) toxoplasmosis

B) anthrax

C) brucellosis

back 7

A

front 8

8) Which of the following is NOT a characteristic of Bacillus anthracis?

A) is aerobic

B) is gram-positive

C) forms endospores

D) found in soil

E) produces endotoxins

back 8

E

front 9

9) The symptoms of gas gangrene are due to all of the following EXCEPT

A) microbial fermentation.

B) necrotizing exotoxins.

C) proteolytic enzymes.

D) hyaluronidase.

E) endocarditis

back 9

E

front 10

10) Which of the following bacterial infections CANNOT be transmitted by dog or cat bites?

A) Pasteurella multocida

B) Streptobacillus

C) Bartonella henselae

back 10

B

front 11

11) Which of the following pairs is mismatched?

A) malaria — Anopheles (mosquito)

B) dengue — Aedes (mosquito)

C) epidemic typhus — Pediculus (louse)

D) Rocky Mountain spotted fever — Dermacentor (tick)

E) encephalitis — Ixodes (tick)

back 11

E

front 12

12) Unsanitary and crowded conditions increase the incidence of all of the following diseases EXCEPT

A) plague.

B) epidemic typhus.

C) endemic murine typhus.

D) Rocky Mountain spotted fever.

back 12

D

front 13

13) Which of the following statements about toxoplasmosis is FALSE?

A) It is caused by a protozoan.

B) The reservoir is cats.

C) It is transmitted by the gastrointestinal route.

D) It is a severe illness in adults.

back 13

D

front 14

14) Which of the following pairs does NOT apply to Chagas' disease?

A) causative agent — Trypanosoma cruzi

B) vector — kissing bug

C) reservoir — rodents

D) diagnosis of acute phase — serological tests for antibodies

back 14

D

front 15

15) Which of the following is NOT caused by a bacterium?

A) epidemic typhus

B) tickborne typhus

C) malaria

back 15

C

front 16

16) A patient presents with inflammation of the heart valves, fever, malaise, and subcutaneous nodules at joints. The recommended treatment is

A) supportive care.

B) streptomycin.

C) chloroquine.

back 16

A

front 17

17) Which of the following statements about puerperal sepsis is FALSE?

A) It is transmitted from mother to fetus.

B) It is caused by health care personnel.

C) It begins as a focal infection.

back 17

A

front 18

18) Which of the following statements about schistosomiasis is FALSE?

A) The cercariae penetrate human skin.

B) They symptoms are caused by immune reactions to the eggs shed in the human host.

C) The intermediate host is an aquatic snail.

D) It is caused by a roundworm.

back 18

D

front 19

19) Which of the following statements about rheumatic fever is FALSE?

A) It is a complication of a group A beta-hemolytic streptococcal infection.

B) It is an inflammation of the heart.

C) It is an inflammation of the joints.

D) It is rarely fatal, even when untreated.

back 19

D

front 20

20) Which of the following pairs is mismatched?

A) Rickettsia — intracellular parasite

B) Brucella — gram-negative aerobic rods

C) Francisella — gram-positive facultatively anaerobic pleomorphic bacillus

back 20

C

front 21

21) Which of the following can be transmitted from an infected mother to her fetus across the placenta?

A) Borrelia

B) cytomegalovirus

C) Spirillum

back 21

B

front 22

22) Which of the following pairs is mismatched?

A) Borrelia — relapsing fever

B) Yersinia — plague

C) Streptobacillus — rat-bite fever

D) Pasteurella — cat-scratch disease

back 22

D

front 23

23) A patient returning from an extended trip into Mexico has the following symptoms: a papule at the site of a previous bug bite and enlarged lymph nodes. Microscopic examination of the papule reveals nucleated cells in white blood cells. The patient most likely has

A) anthrax.

B) brucellosis.

C) leishmaniasis.

back 23

C

front 24

24) Human-to-human transmission of plague is usually by

A) rat flea.

B) dog flea.

C) the respiratory route.

back 24

C

front 25

25) A characteristic symptom of plague is

A) small red spots on the skin.

B) swollen lymph nodes.

C) rose-colored spots.

back 25

B

front 26

26) Which of the following pairs regarding the epidemiology of malaria is mismatched?

A) vector — Ixodes

B) etiology — Plasmodium

C) found in liver — sporozoites

back 26

A

front 27

27) A predisposing factor for infection by Clostridium perfringens is

A) gangrene.

B) burns.

C) debridement.

back 27

A

front 28

28) Which of the following is NOT a zoonosis?

A) puerperal sepsis

B) Hantavirus infection

C) anthrax

back 28

A

front 29

29) Arthropods can serve as a reservoir for all of the following diseases EXCEPT

A) plague.

B) brucellosis.

C) epidemic typhus.

back 29

B

front 30

30) Which of the following pairs is mismatched?

A) cat-scratch disease — malignant pustule developing into septicemia

B) brucellosis — a temperature of 40°C each evening

C) tularemia — a localized infection appearing as a small ulcer

back 30

A

front 31

31) Which of the following CANNOT be transmitted to humans from domestic cats?

A) toxoplasmosis

B) plague

C) Chagas' disease

back 31

C

front 32

32) Which of the following is the same for both relapsing fever and undulant fever?

A) rising and falling body temperature

B) mode of transmission

C) presence of rash

back 32

A

front 33

33) Which of the following is NOT treated with antibiotics?

A) plague

B) tularemia

C) Lyme disease

D) Ebola

back 33

D

front 34

34) Which of the following produces a permanent carrier state following infection?

A) Borrelia

B) cytomegalovirus

C) Spirillum

back 34

B

front 35

35) Epstein-Barr virus has been implicated in all of the following EXCEPT

A) endocarditis.

B) infectious mononucleosis.

C) Burkitt's lymphoma.

back 35

A

front 36

36) Which of the following leads to all the others?

A) subcutaneous hemorrhaging

B) presence of antirickettsial antibodies

C) blockage of capillaries

D) bacterial growth in endothelial cells

back 36

D

front 37

37) A patient complains of fever, severe muscle and joint pain, and a rash. The patient reports returning from a Caribbean vacation one week ago. Which of the following do you suspect?

A) Lassa fever

B) dengue

C) Hantavirus hemorrhagic fever

back 37

B

front 38

38) Which of the following pairs is NOT correctly matched for Gram reaction?

A) Lyme disease — gram-negative

B) tularemia — gram-negative

C) anthrax — gram-positive

D) Rocky Mountain spotted fever — gram-negative

E) Ehrlichia — gram-positive

back 38

E

front 39

39) Scrapings from a patient's rash reveal cercariae. The disease is most likely

A) Lyme disease.

B) Rocky Mountain spotted fever.

C) relapsing fever.

D) swimmer's itch.

back 39

D

front 40

40) You advise your pregnant friend to not adopt a new kitten from her neighbor because she could contract

A) plague.

B) Brukitt's Lymphoma.

C) toxoplasmosis.

back 40

C

front 41

41) Which of the following is evidence that the arthritis afflicting children in Lyme, Connecticut, was due to bacterial infection?

A) treatable with penicillin

B) not contagious

C) accompanied by a rash

back 41

A

front 42

42) Which of the following is NOT controlled by a mosquito eradication program?

A) chikungunya fever

B) yellow fever

C) dengue fever

D) schistosomiasis

back 42

D

front 43

43) A 62-year-old man was hospitalized with an eight-day history of fever, chills, sweats, and vomiting. His temperature on admission was 40°C (104°F). A routine peripheral blood smear revealed ring-shaped bodies in the RBCs. What treatment would you prescribe?

A) hyperbaric oxygen

B) mefloquine

C) no treatment

back 43

B

front 44

44) Which of the following statements about group B streptococci is FALSE?

A) They are present in healthy carriers.

B) They cause gram-positive sepsis.

C) They cause strep throat.

back 44

C

front 45

45) Brucella bacteria are considered a potential agent of bioterrorism because

A) they are not susceptible to antibiotics.

B) they easily become airborne.

C) infection causes a fever.

back 45

B

front 46

1) All lymph that returns to the heart must pass through at least one lymph node.

back 46

TRUE

front 47

2) Lymph contains red blood cells.

back 47

FALSE

front 48

3) Pathogens must be blood-borne in order to initiate sepsis.

back 48

FALSE

front 49

4) Neonatal sepsis is most commonly caused by group A streptococci.

back 49

FALSE

front 50

5) Subacute bacterial endocarditis is commonly the result of infections initially focused on the oral cavity.

back 50

TRUE

front 51

6) All viral hemorrhagic fever outbreaks have been confined to the Eastern Hemisphere.

back 51

FALSE

front 52

7) Netting modified for sandflies should also be useful in preventing malaria.

back 52

TRUE

front 53

8) Tularemia is considered to be a potential bioterrorism agent due its high infective dose.

back 53

FALSE

front 54

9) All forms of typhus are associated with arthropod vectors.

back 54

TRUE

front 55

10) The most likely primary site of replication during mononucleosis is the B lymphocyte.

back 55

TRUE