Lecture 3

Question 1

Corynobacterium

Answer 1

is a genus of Gram-positive bacteria - Mostly in Skin microbiota - in moist sites

Question 2

Pseudomonodota

Answer 2

is a major phylum of Gram-negative bacteria. - Their old name is proteobacteria- They are second major group on the skin after corynobacterium - Mostly on dry sites

Question 3

clostridium perfringes

Answer 3

is a Gram-positive, bacillus (rod-shaped), anaerobic, spore-forming pathogenic bacterium of the genus Clostridium - can be part of normal flora in some individuals.

Question 4

Streptococcus

Answer 4

Streptococcus is a genus of gram-positive coccus (plural cocci) or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales. - they tend to form pairs or chains that may appear bent or twisted. - many streptococcal species are not pathogenic, and form part of the commensal human microbiota of the mouth, skin, intestine, and upper respiratory tract.

Question 5

Staphylococcus

Answer 5

Staphylococcus is a genus of Gram-positive bacteria in the family Staphylococcaceae from the order Bacillales. Under the microscope, they appear spherical (cocci), and form in grape-like clusters - Many species cannot cause disease and reside normally on the skin and mucous membranes of humans and other animals - in some individuals, They are residing in nose microbiota and are part of its normal flora

Question 6

Cutibacterium

Answer 6

Cutibacterium (formerly known as Propionibacterium) species are nonsporulating, gram-positive anaerobic bacilli that are considered commensal bacteria on the skin. Genus

Question 7

Propinobacterum acnes

Answer 7

Cutibacterium acnes (formerly Propionibacterium acnes)[1][2][3][4] is the relatively slow-growing, typically aerotolerant anaerobic, gram-positive bacterium (rod) linked to the skin condition of acne - If C.acnes and S.aurose be together on the skin they can form biofilm(acne)

Question 8

Staphylococcus epidermis

Answer 8

s a Gram-positive bacterium, and one of over 40 species belonging to the genus Staphylococcus.[1] It is part of the normal human microbiota, typically the skin microbiota - by producing ESP S.epidermis inhibit biofilm production by S.aureuse and C.acnes.

Question 9

Staphylococcus hominis

Answer 9

Staphylococcus hominis is a coagulase-negative member of the bacterial genus Staphylococcus, consisting of Gram-positive, spherical cells in clusters. located on the skin - They produce lantibiotic which inhibit aureuse

Question 10

Staphylococcus lugdunenesis

Answer 10

Located on the skin- produce lugdunin which inhibit aureuse

Question 11

Conjunctiva microbiota

Answer 11

Staphylococci - Diphteroid - Poropionibacteria - Streptococci

Question 12

Diphteroid

Answer 12

This term is used to represent corynobacteria that are nonpathogenic

Question 13

Oral microbiota

Answer 13

Streptococcus - Viellonela - Neisseria - Fusobacterium - Porphyromonas - Rothia - Haemophilus - Prevotella

Question 14

Prevotella

Answer 14

Prevotella is a genus of Gram-negative bacteria.

Prevotella spp. are members of the oral, vaginal, and gut microbiota and are often recovered from anaerobic infections of the respiratory tract. -

Question 15

Haemophilus

Answer 15

Haemophilus is a genus of Gram-negative, pleomorphic, coccobacilli bacteria belonging to the family Pasteurellaceae. These organisms inhabit the mucous membranes of the upper respiratory tract, mouth, vagina, and intestinal tract.

Question 16

Rothia

Answer 16

Rothia is a Gram-positive, aerobic, rod-shaped and non-motile bacterial genus from the family Micrococcaceae. Rothia is prevalent in human saliva and it produces enterobactin.

Question 17

Porphyromonas

Answer 17

Porphyromonas is a Gram-negative, non-spore-forming, obligately anaerobic and non-motile genus from the family Porphyromonadaceae. located in oral cavity

Question 18

Fusobacterium

Answer 18

Fusobacterium is a genus of obligate anaerobic, Gram-negative,[2] non-sporeforming bacteria[3] belonging to Gracilicutes. located in oral cavity

Question 19

Neisseria

Answer 19

Neisseria is a large genus of bacteria that colonize the mucosal surfaces of many animals. located in oral cavity. Neisseria species are Gram-negative bacteria included among the Pseudomonadota, a large group of Gram-negative forms.

Question 20

Veillonella

Answer 20

Veillonella are Gram-negative bacteria (Gram stain pink) anaerobic cocci, unlike most Bacillota, which are Gram-positive bacteria.[1] This bacterium is well known for its lactate fermenting abilities. It is a normal bacterium in the intestines and oral mucosa of mammals

Question 20

Porphyromonas gingivalis

Answer 20

Porphyromonas gingivalis belongs to the phylum Bacteroidota and is a nonmotile, Gram-negative, rod-shaped, anaerobic, pathogenic bacterium. It is found in the oral cavity. as well as in the upper gastrointestinal tract, the respiratory tract and the colon. It has been isolated from women with bacterial vaginosis. It can cause esophageal cancer as well as pancreatic cancer. They can be the cause of atherosclerosis.

Question 21

Aggregatibacter actinomycetemcomitans

Answer 21

Cause panceratic cancer

Question 22

Fusobacteria

Answer 22

Cause colorectal cancer by means of immune responses that produce oncogenes

Question 23

Streptococcus mutans

Answer 23

Streptococcus mutans is a facultatively anaerobic, gram-positive coccus (round bacterium) commonly found in the human oral cavity and is a significant contributor to tooth decay. can be the cause of atherosclerosis.

Question 24

Seudomonase auroginosa

Answer 24

Pseudomonas aeruginosa is a common encapsulated, Gram-negative, aerobic–facultatively anaerobic, rod-shaped bacterium that can cause disease in plants and animals, including humans. it is not part of oral flora but can cause pneumonia if it enters into airway.

Question 25

Moraxella

Answer 25

Moraxella is a genus of gram-negative bacteria in the family Moraxellaceae. can be found in nasal and nasopharynx cavity.

Question 26

Dolosigranulum

Answer 26

Dolosigranulum is a Gram-positive, non-spore-forming, facultatively anaerobic and non-motile bacterial genus from the family of Carnobacteriaceae. can be found in nosopharynx

Question 27

Leptotichia

Answer 27

Leptotrichia is a gram-negative anaerobic bacillus and is a very commonly observed genus in the human oral cavity. can be seen in nosopharynx.

Question 28

Tropheryma whipplei

Answer 28

can be found in the lungs.

Question 29

Nasal cavity

Answer 29

Staphylococcus spp - propinobacterium spp - corynobacterium spp - Moraxella spp - Streptococcus spp

Question 30

Nasopharynx

Answer 30

Moraxella - Staphylococcus - corynobacterium - Dolosigranulum spp - Haemophillus spp - Streptococcus spp

Question 31

Oropharynx

Answer 31

Streptococcus spp - Rothia spp - Veillonella spp - Prevotella spp - Leptotrichia spp

Question 32

Lungs

Answer 32

Prevotella - Veillonella spp - Streptococcus spp - Tropherima whipplei