Normal Flora Flashcards
Transient normal flora may have commensal relationship with humans. true or false?
true
A baby inside the womb is not sterile for it acquires normal flora the moment it is implanted. True or false?
false, normal flora is acquired upon rupture of bag of water + passage thru birth canal
Which is true?
a. humans benefit from commensal normal flora
b. humans benefit from mutualistic normal flora
c. both a & b
b. humans benefit from mutualistic normal flora
Clindamycin is an antibiotic associated with the ___ of normal flora
a. overgrowth
b. eradication
c. Clindamycin isn’t even an antibiotic.
a. overgrowth
Which does not make way for opportunistic normal flora to take advantage?
a. old age
b. drinking Yakult/Chamyto
c. immunocompromised condition or treatment
d. prolonged antibiotic use
b. drinking Yakult/Chamyto
Which is not a characteristic of normal flora?
a. adherence to host cell
b. production of antimicrobial substances
c. none of the above
c. none of the above
Desquamation is the detachment of host epithelial cells from the body surface and replacement of lost cells by new cells. Does it eliminate both pathogenic bacteria & normal flora?
No. It only eliminates pathogenic bacteria.
Streptococcus salivarius - (a)
Streptococcus mutans - (b)
What is (a) and what is (b)?
(a) tongue
(b) tooth enamel
normal flora does not produce organic acids and vitamins, true or false?
false; it produces organic acids, vit B12 and vit K
False about oral thrush
a. may be caused by Saccharomyces cervisiae
b. steroid therapy may be predisposing condition Steroid therapy
c. Prolonged antibiotic treatment may trigger this
d. may be caused by Candida albicans
a. may be caused by Saccharomyces cervisiae
Candida albicans dapat!
False about pseudomembranous colitis
a. prolonged antibiotic treatment may trigger this
b. Neisseria difficile may cause this
c. none of the above
b. Neisseria difficile may cause this
Clostridium difficile dapat!
Pneumocystis carinii may cause____ in people with ____
pneumonia, AIDS
Neisseria meningitides causes meningitis due to ____
complement deficiency
Normal flora at the skin is normally Gram positive. However, there are certain types of anaerobic bacteria that are most often found near the rectum. These anaerobic bacteria fall under what category?
Enterobacteriaceae
Staphylococcus epidermidis, Staphylococcus aureus, Corynebacterium, Streptococcus pneumoniae, Neisseria, Moraxella Enterobacteriaceae
Which is not found on the eye?
Enterobacteriaceae (anaerobic)
The normal flora of the eye can be found at which specific part of the eye?
Conjunctival area
This substance in tears breaks down the peptidoglycan cell wall of pathogens.
Lysozyme
What bacteria species in the nose can cause crusting in this organ (when the said bacteria becomes opportunistic)?
Staphylococcus aureus
Which is not a Gram (+) bacteria species found in the upper respi tract? A.Moraxella catarrhalis B.Viridans streptococci C.Staphylococcus aureus D.Streptococus pneumoniae
A.Moraxella catarrhalis
The lower respiratory tract houses normal flora, true or false?
False
___ facilitates aggregation & removal of microbes from the mucus membrane
Secretory immunoglobulin A
___:removes iron used by microbes
Lactoferrin
saliva which cause continuous flushing and desquamation of epithelial cells promotes removal of microbes, true or false?
True
Where is Eikenella corodens found?
Mouth or oropharynx
Is Eikenella corodens Gram (+) or Gram (-)?
Gram (-)
Normal flora at mouth is established before birth, true or false?
False, after birth yan
True or false: there is bacteria found inside the stomach, near the rugae.
False. Bacteria are only able to colonize deeper layers of the walls.
Bacteria are only able to colonize deeper layers of the walls of the stomach. Which of these does not commonly do this? A. Streptococcus B. Lactobacillus C. Neisseria meningitides D. Helicobacter pylori
C. Neisseria meningitides
Bile salts are inhibitory to Gram-__ bacteria
Positive
Why is it that the number of normal flora has increasing trend from duodenum to ileum?
ileum has higher pH than jejunum/duodenum
o Staphylococcus epidermidis o Streptococcus faecalis o Lactobacillus o Streptococcus mutans o Corynebacterium
Which of these are not found in the urethra?
o Streptococcus mutans(at tooth enamel)
The ff are sterile except A. Ovary B. Vagina C. Uterus D. Ovidct
B. Vagina
urination washes organisms out the urinary bladder, true or false?
False, walang organisms ang bladderx Urethra dapat
pH of vagina does not change throughout sexual development, therefore the normal flora & the environment stay the same.. True or false?
False. pH of vagina changes throughout sexual development providing different environments for different organisms
In the vagina, Enterobacteriaceae are more common in these ages
Prepubescent & post-menopausal
Gardnerella vaginalis is Gram __
Negative
