Practice questions Flashcards

0
Q

an exoenzyme that breaks down fibrin clots is known as a

A

kinase ( allow fluid to get into the host cells)

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1
Q

Exotoxins are

A

proteins that are released from the cells and negatively affect host cells

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2
Q

septic shock with gram negative bacteria is caused by….

A

Lipid A

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3
Q

How does coagulase help Staphylococcus aureus to establish an infection?

A

walls off the source of bacteria with protein so that WBC can’t get at them

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4
Q

What is the function of fimbriae (pilli)?

A

attachment

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5
Q

what is the major mechanism of pathogenicity for Bacillius anthracis?

A

production of toxins

-it is a gram positive, endospore0forming bacteria. It can synthesize a protein capsule, causes anthrax

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6
Q

what is the major determinant of pathogenicity for bacterium Neisseria gonorrhoeae?

A

Pilli

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7
Q

C. Dif ‘s important pathogenicity factor is?

A

production of exotoxins

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8
Q

staphylococcus aureus

A

bacterium

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9
Q

plasmodium falciparum

A

parasite

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10
Q

cryptospordium parvum

A

parasite

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11
Q

ringworm is caused by a

A

fungus

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12
Q

what enzyme is used to differentiate streptococcus from staphylococcus in the lab?

A

catalase

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13
Q

bacteroides fragillis is

A

a gram negative, non-spore forming bacillus that affects the human colon, usually commensal but can cause infection if displaced in the bloodstream or surrounding tissue following surgery, disease, or trauma.

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14
Q

Blepharitis is

A

inflammation of the eyelids

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15
Q

does a healthy fetus in uterus have normal flora?

A

no, the healthy fetus is sterile in uterus

16
Q

leading bacterial infectious cause of blindness worldwide?

A

chlamydia trachomatis

17
Q

what is streptococcus species that belong in the alpha-streptococcus group?

A

streptococcus mutans

18
Q

a tingling on the lower back and then a rash with raised blisters could be…

A

varicella zoster reactivation

19
Q

what is the cardinal symptom of necrotizing fascilitis caused by streptococcus species?

A

disproportionate pain