NAIMMCQ: Bacteriology

Bacteriology

Showing posts with label Bacteriology. Show all posts

What test allows identification of a capsule in bacteria?

Answer: The quellung test utilizes anti'-capsular antibodies that bind and induce capsular swelling, which can then be visualized by light microscopy. It was used in the past for the detection of Streptococcus pneumoniae.

What are the two functions of a bacterial capsule?

Answer:

1. Capsules are virulence factors that serve to protect bacteria from phagocytosis by macrophages and neutrophils.
2. They also aid bacteria in attaching to host surfaces.

What are the two notable examples of bacterial capsules made from a macromolecule other than polysaccharides?

Answer:

1. The capsule of Bacillus anthmcis is made from D-glutamic acid polypeptide.
2. The capsule of Yersinia pestis is made from amino acids.

Bacterial capsules are typically made from what macromolecule?

Answer: Polysaccharides (macromolecules made of sugar monomers)

What are the three major components of the bacterial envelope?

1. Capsule
2. Cell wall
3. Cell membrane

Which of the following is NOT classified as STI?

A. Gonorrhea
B. Pelvic inflammatory disease
C. Trichomoniasis
D. Syphilis
E. Chlamydia

Answer: B

C. trachomatis is the most common cause of ____________ in young men.

A. Trichomoniasis
B. Epididymis
C. Pelvic inflammatory disease (PID)
D. Gonorrhea

Answer: B

"Rice water" stool is a classic symptom of which of the following infections?

A. Cholera
B. Shigella
C. C. difficile
D. E. coli

Answer: A

IV drug users are more susceptible to get endocarditis resulting from which of the following organisms?

IV drug users are more susceptible to get endocarditis resulting from which of the following
organisms?

A. Streptococcus
B. Staphylococcus
C. Candida
D. A and B
E. B and C

Answer: B

S. aureus vegetations on previously normal tricuspid valve can lead to:

A. Acute endocarditis
B. Subacute endocarditis
C. Chronic endocarditis
D. None of the above

Answer: A

Anaerobic bacteria in the intestines are major source of which vitamin?

A. C
B. B
C. K
D. A
E. E

Answer: C

_____ causes the release of shiga?

like toxin and can lead to hemolytic uremia.
A. C. perfringens
B. C. botulinum
C. E. coli
D. S. enteriditis

Answer: C

Viral cause(s) of diarrhea result(s) from the infection of which of the following viruses?

A. Rotavirus
B. Astrovirus
C. Cytomegalovirus
D. All of the above
E. A and C

Answer: D

Headache, fever and nuchal rigidity are symptoms of:

A. Endocarditis
B. Meningitis
C. Peritonitis
D. Sinusitis

Answer: B

Which of the following population is/are particularly susceptible to conjunctivitis?

A. Neonates
B. Children
C. Adolescent
D. A and B
E. B and C

Answer: D

Swimmers and diabetics are at increased risk for which of the following infection?

A. Otitis media
B. Meningitis
C. Pseudomembranous colitis
D. Otitis externa

Answer: D

E. coli is the most common cause of meningitis in which of the following age group?

A. 0-6 months
B. 6 months-6 years
C. 6-60 years
D. >60 years

Answer: A

Which of the following ways is toxoplasmosis contracted?

A. Uncooked meat
B. Ixodes ticks
C. Cat feces
D. A and B
E. A and C

Answer: E

Which of the following is/are NOT congenital rubella syndrome?

A. Heart malformations
B. Hearing loss
C. Cataracts
D. Mental retardation
E. Skin lesions

Answer: E

_______is a fungal infection that can be associated with antibiotic use or immune deficiency.

A. Bacterial vaginosis
B. Candidiasis
C. Trichomoniasis
D. Toxoplasmosis

Answer: B