Normal Microbiota

Question 1

Symbiosis - mutualism

Answer 1

both organs benefit

Question 2

Symbiosis - neutralism

Answer 2

neither organism gets benefit or harm

Question 3

Symbiosis - commensalism

Answer 3

1 benefits, other doesn’t get benefit or harm

Question 4

Symbiosis - parasitism

Answer 4

1 benefits at expense of other

Question 5

Name some non sterile sites?

Answer 5

skin
GI tract
Conjuctiva
Vagina
Nasopharynx

Question 6

Name some sterile sites

Answer 6

• lower respiratory tract
• upper genital tract
• urinary tract
• middle ear
• pleural cavity
• peritoneal cavity
• spinal cord / meninges

Question 7

What bacteria are part of the skin flora?

Answer 7

Staphylococcus epidermis
Staphylococcus aureus
Propionibacterium acnes

Question 8

What bacteria is part of mouth flora?

Answer 8

Streptococci Viridans

aka oral strep

Question 9

What bacteria is part of nostril flora?

Answer 9

Staph aureus

Question 10

Pharyngeal flora

Answer 10

1) Steptococcus Pyogenes
2) Haemophilus Influenzae
3) Streptococcus pneumoniae
4) Neisseria meningitidis
5) Staphylococcus Aureus

Question 11

What bacteria are present in the GI tract? (stomach and small int)

Answer 11

(mainly aerobic bacteria)

-h.pylori

Question 12

bacteria in the GI tract (large intestine_

Answer 12

mostly anaerobes

• bacteroides spp
• clostridium spp
• bifidobacteria spp

Question 13

What are the aerobic, gam negative bacilli present in the large intestine?

Answer 13

• E.coli
• Enterobacter
• proteus
• citrobacter
• Klebsiella

Question 14

What bacteria causes diarrhoea and pseudomembranous colitis?

Answer 14

Clostridium difficile

Question 15

What is the method of cause of conjuctivitis?

Answer 15

Tranlocation of flora into eye

Question 16

what method caused vaginal thrush?

Answer 16

overgrowth of normal flora.

Usually when treated with broad spec antib