Bacteria Flashcards
PT has swelling of submandibular, tenderness. Patient is alcoholic. Radiographic-mass radiopaque circumscribed 1x1cm . what’s the reason?
Bacterial infection
What’s the action of pilli in organisms pathogenicity?
Attachment & adherence to host cells
What’s the difference between staph & strep?
Catalase enzyme
Lancefield is determined by?
C-carb composition of cell wall
What does streptomycin inhibit?
Protein production (translation)
what aspect of Staph s responsible for food poisoning?
Enterotoxin
MOA of staph aureus for drug resistance?
Produce enzymes that breaks down penicillin, beta lactamase
What bacteria causes endocarditis in IV DRUG users?
Staph Aureus
What’s the most common type of endocarditis?
Streptococcus viridian (alpha-hemolytic )
Which disease has Janeway Lesions?
Infective endocarditis
Which toxin produces scarlet fever?
Erythrotoxin
Rash for Scarlett Fever is cause by?
Ertyrhogenic Toxin of Group A beta hemolytic S.Pyogenes
Dextrans is produced by?
Dextran: linked in alpha 1,6 linkage
What enzyme do oral bacteria use to create dextran & participates in bacterial aggregation on teeth?
What enzyme primarily break down sucrose?
Glucosyltransferase
Dextans for polymers of?
Glucose
HOw is glucose and fructose associated with caries?
Dextrans & levans
Which of the following is not an oral bacterium & not found in dental plaque?
S. pyogenes
Which of the following doesn’t cause penumonia?
S. mutans
What’s the most common bacteria on the dorsum of the tongue?
S. salivarius
N-Muramic acid is part of?
Bacterial cell wall
What does glycan binds to in bacterial cell wall?
D-alanine
Rickettsia is a ?
Typhus
Rickettsia disease are destructive for?
Endothelial cells of capillaries
Which one needs arthropods vector?
Rickettsia EXCEPT COX BURN
Weil felix test is for?
Ricketssia
Which is not from a flea/insect bite?
Q fever
The toxin of gas gangrene organisms has what kind of enzymatic activity?
Lipase lecithinase
MOA of tetanus toxin?
Inhibition of NT release (prevent release of GABA & glycine)
OVer-treating with antibiotics, C. dfifficiles, would show?
Pseudomembranous colitis
What is used to treat with Clostridium difficiles’s diarrhea & intestinal colitis?
Clindamycin
What are 2 pore-forming bacteria?
- Clostridium
2. Bacillus
What ion is related to spores?
Calcium dipicolinic (heat resistance of the endospores)
What organism has mycolic acid that block antibiotics from penetrating?
Mycobacterium tuberculosis
What organism is mainly found in AC condition systems?
Legionnaires pneumophila
An infection of the epithelial cells of the eye that can sometimes enter back into the nasopharynx?
Trachoma due to chlamydia trachomatis
Blindiness results from?
Chlamydia trachomatis
trachoma & adult inclusion conjunctivitis
What’s the most common cause of non-gonoccoal urethritis?
Chlamydia
Which produces these toxins: PA, EF, LF?
Bacillus anthracis
What test is used for syphilis’s not painful chancre?
Wassermann test
Dark field microscopy
What protozoa are spread in cat feces?
Toxoplasma gondii
What is a sign of congenital syphilis infection?
Hutchinson’s incisors
