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Microbiology > Lecture 3 > Flashcards

Lecture 3 Flashcards

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Biology 101 flashcards
1
Q

Niesseriae is gram-positive cocci

A- true
B- false

A

False, is gram-negative diplococci

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2
Q

Important human pathogens in genus Neisseriae : …. , …..

A

N.gonorrheae (gonococci), N. Meningitides (meningococci)

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3
Q

N. gonorrheae and N. meningitides occur as commensals in the oro-pharynx, naso-pharynx and vagina.

A- true
B- false

A

False, other members of Neisseriae

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4
Q

Not all Niesseriae oxidase positive

A- true
B- false

A

False, the all

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5
Q

G.r.

The infection of gonorrhea doesn’t involve the adult vagina ..

A

Because it’s acidity and the presence of normal flora.

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6
Q

The most frequent complication is ascending infection of the fallopian tubes causing

A

Salpingitis and pelvic inflammatory disease

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7
Q

An infection that may occur in young females through contaminated towels and toilet seats :

A- Ophthalmia neonatorum
B- vulvovaginitis
C- Gonococcal bacteraemia

A

B

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8
Q

It may occur in rare cases and may result in arthritis.

A- Ophthalmia neonatorum
B- vulvovaginitis
C- Gonococcal bacteraemia

A

C

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9
Q

An eye infection (conjunctivitis) occurring in the newborn during their passage in an infected birth canal.

A- Ophthalmia neonatorum
B- vulvovaginitis
C- Gonococcal bacteraemia

A

A

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10
Q

It may involve the cornea leading to blindness.

A- Ophthalmia neonatorum
B- vulvovaginitis
C- Gonococcal bacteraemia

A

A

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11
Q

Important virulence factors as they mediate attachment to mucosal cells of gonococci

A

Pili

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12
Q

….. is enriched selective medium for Neisseriae.

A

Thayer-Martin (TM) medium

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13
Q

Oxidase test of gonococci

A

Positive

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14
Q

Sugar fermentation of gonococci :

A

Gonococci ferment glucose (with acid production)

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15
Q

Diseases caused by meningococci:

A

Meningitis and meningococcaemia.

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16
Q

Virulence factors of meningococci :

A
  • polysaccharide capsule
  • lipopolysaccaride (endotoxin)
  • IgA protease
17
Q

In meningococci :
Glucose level —>
Proteins level—>

A

Decreased

Increased

18
Q

CSF in meningococci turpid due to

A

Large number of pus celle

19
Q

CSF in meningococci under tension due to

A

Occurrence of inflammatory reaction in closed space

20
Q

Meningococci is gram-negative diplococci, intercellular and extracellular

A-true
B-false

A

True

21
Q

Most important 3 causes of pyogenic meningitis

A

Meningococci, pneumococci and H. influenzae type b

22
Q

Sugar fermentation of meningococci

A

Meningococci ferment glucose and maltose

23
Q

Culture on simple media can grow in N. meningitides

A- true
B- false

A

False, can’t grow in N. meningitides

And can grownin commensal Neisseriae

24
Q

Agglutination with specific antimeningococcal sera can be agglutinated in N. meningitides

  • true
  • false
A

True but can’t aggutinated in commensal Neisseriae

25
Q

sexually transmitted disease affecting both males and females.

A

Gonorrhea

26
Q

composed of chocolate agar + antimicrobials.

A

Thayer-mertin ( TM )

27
Q

tends to occur in epidemic form epidemic cerebrospinal fever (epidemic cerebrospinal meningitis ).

A

Meningococcal meningitis

28
Q

Oxidase test of meningococci :

A

Positive

29
Q

Treatment of N. Meningitides

A

Penicillin G , cephalosporin

Microbiology (5 decks)

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