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Serological and Molecular Detection of Bacerial Infections

Total questions: 32

Worksheet time: 32mins

Name
Class
Date
1.

- host and microbes live together long term

- indigenous microbiota

a)

symbiotic

b)

commensalistic

c)

mutualistic

d)

parasitic

2.

- no benefit or harm to either organism

a)

symbiotic

b)

commensalistic

c)

mutualistic

d)

parasitic

3.

- both host and microbes benefit

a)

symbiotic

b)

commensalistic

c)

mutualistic

d)

parasitic

4.

- microbes cause harm to the host

a)

symbiotic

b)

commensalistic

c)

mutualistic

d)

parasitic

5.

organism's ability to establish an infection

a)

infectivity

b)

pathogenicity

c)

virulence

6.

ability of an organism to cause disease

a)

infectivity

b)

pathogenicity

c)

virulence

7.

extent of pathology caused by an organism when it infects a host

a)

infectivity

b)

pathogenicity

c)

virulence

8.

- Growth on broth or solid media

- Major means of diagnosis, but may take time or may not be possible

a)

culture of the causative agent

b)

microscopic examintaion

c)

detection of bacterial antigens

d)

molecular detection of bacterial DNA or RNA

e)

serology

9.

- gram stain or special stain

a)

culture of the causative agent

b)

microscopic examintaion

c)

detection of bacterial antigens

d)

molecular detection of bacterial DNA or RNA

e)

serology

10.

- rapid testing by ELISA, LFA, or LA

a)

culture of the causative agent

b)

microscopic examintaion

c)

detection of bacterial antigens

d)

molecular detection of bacterial DNA or RNA

e)

serology

11.

- Can obtain results in a few hours with PCR

a)

culture of the causative agent

b)

microscopic examintaion

c)

detection of bacterial antigens

d)

molecular detection of bacterial DNA or RNA

e)

serology

12.

- detects antibodies to bacterial antigens

a)

culture of the causative agent

b)

microscopic examintaion

c)

detection of bacterial antigens

d)

molecular detection of bacterial DNA or RNA

e)

serology

13.

- most common

- can include fever, chills, headache

a)

Pharyngitis

b)

Pyoderma

c)

Toxic shock syndrome

d)

Necrotizing fascilitis

e)

Treated with antibiodics

14.

- include by streptococcus pyogenes exotoxin that can act as superantigens that produces overproduction of cytokine

- usually related to tampons

a)

Pharyngitis

b)

Pyoderma

c)

Toxic shock syndrome

d)

Necrotizing fascilitis

e)

Treated with antibiodics

15.

- can occur when it is skin infection invades the muscles in he extremities or in thr throat

- caused by streptococcal X toxins that can induce a rapidly spreading infection that can result to ischemia

a)

Pharyngitis

b)

Pyoderma

c)

Toxic shock syndrome

d)

Necrotizing fascilitis

e)

Treated with antibiodics

16.

- develops 1 to 3 weeks after pharyngitis or tonsillitis in 2% to 3% of infected individuals

- most likely caused by immune responses to streptococcal antigen that cross - react with human heart tissue

a)

Acute rheumatic fever

b)

Post streptococcal glomerulonephritis

17.

- deposits of immune complexes containing streptococcal antigens in glomeruli

a)

Acute rheumatic fever

b)

Post streptococcal glomerulonephritis

18.

- Nephelometric method currently used that measure lights scatter produced by immune commplexes containing streptolysin antigen

- titer elevated in 85% of patients with acute rheumatic fever

a)

Antistrptolysin O (ASO)

b)

Anti-DNase B

c)

Streptozyme test

19.

- produced by both rheumatic fever and impetigo patients

- Tested by EIA and nephelometric methods

- Test the ability of DNA's antibodies in the patient serum

a)

Antistrptolysin O (ASO)

b)

Anti-DNase B

c)

Streptozyme test

20.

- patient will ingest a radioactive carbon (14C) or nonradioactive 13C

- important in determining whether the bacteria have been eradicated by antimicrobial therapies

a)

Detect urease in stimach biopsy (CLO test)

b)

Urea breath test

c)

H pylori antigens

d)

H pylori antibodies

21.

- yellow gel with turn into hot pink as a result of increase in AH

- majority of test turn positive within 20 minutes

a)

Detect urease in stimach biopsy (CLO test)

b)

Urea breath test

c)

H pylori antigens

d)

H pylori antibodies

22.

- determine whether the bacteria have been eliminated after treatment

a)

Detect urease in stimach biopsy (CLO test)

b)

Urea breath test

c)

H pylori antigens

d)

H pylori antibodies

23.

active or recurrent infection

a)

O antigen

b)

H antigen

c)

A or B antigen

d)

O and A or B antigen

24.

- past infection

- recent immunizations

- exposure

- Covalescent

a)

O antigen

b)

H antigen

c)

A or B antigen

d)

O and A or B antigen

25.

- Paratyphoid fever

a)

O antigen

b)

H antigen

c)

A or B antigen

d)

O and A or B antigen

26.

- mixed infection

a)

O antigen

b)

H antigen

c)

A or B antigen

d)

O and A or B antigen

27.

- gram positive bacteria

- commonly cause acute infections of the upper respiratory tract and skin

a)

Group A streptococci

b)

Helicobacter pylori

c)

Mycoplasma pneumoniae

d)

Rickettsia

28.

- gram negative

- urease producing bacerium that cause gastric and diodenal ulcers

- can lead to gastric carcinoma or MALT tumors

a)

Group A streptococci

b)

Helicobacter pylori

c)

Mycoplasma pneumoniae

d)

Rickettsia

29.

- tiny bacteria that lack cell wall

- detection: PCR and serologic assays

a)

Group A streptococci

b)

Helicobacter pylori

c)

Mycoplasma pneumoniae

d)

Rickettsia

30.

- obligate intracellular gram - negatice bacteria

- transmitted by arthropods

a)

Group A streptococci

b)

Helicobacter pylori

c)

Mycoplasma pneumoniae

d)

Rickettsia

31.

gold standard for laboratory diagnosis of RMSF

(a)  

32.

has its limitation, there can be delay in stat of infection and antibody production

(a)