Bacteria DSA

Question 1

Gram Postive Bacteria Cell Walls

Answer 1

2 layers
inner cytoplasmic membrane
outer thick peptidoglycan layer - 60-100%
low lipid content
NO endotoxin (except listeria monocytogenes)
NO periplasmic space
NO porin channel
Vulnerable to lysozyme and penicillin attack

Question 2

Gram Negative Bacteria Cell Walls

Answer 2

3 layers
inner cytoplasmic membrane 
thin peptidoglycan layer - 5-10%
outer membrane with LPS 
high lipid content 
endotoxin (LPS) - lipid A
periplasmic space 
porin channel 
resistant to lysozyme and penicillin attack

Question 3

cocci

Answer 3

sherical

Question 4

bacilli

Answer 4

rods

Question 5

spiral forms

Answer 5

comma shaped, S-shaped, or spiral-shaped

Question 6

pleomorphic

Answer 6

lacking distinct shape

Question 7

diplococci

Answer 7

pairs

Question 8

streptococcus

Answer 8

+

cocci

Question 9

staphylococcus

Answer 9

+

coci

Question 10

bacillus

Answer 10

+

rod, spores

Question 11

clostridium

Answer 11

+

rod, spores

Question 12

corynebacterium

Answer 12

+

rod

Question 13

listeria

Answer 13

+

rod, endotoxins

Question 14

neisseria

Answer 14

-

cocci

Question 15

spirochetes

Answer 15

-

spiral

Question 16

mycobacteria

Answer 16

TB and leprosy
weak +
stain better w/acid fast stain

Question 17

spirochetes

Answer 17

gram -

too small for light microscope must use darkfield microscope

Question 18

mycoplasma

Answer 18

no cell wall so not gram +/-

Question 19

cocus

Answer 19

gram +
streptococcus
staphylococcus

gram -
neisseria

Question 20

bacillus

Answer 20

gram +
corynebacterium 
listeria
bacillus
clostridium 
mycobacteria (acid-fast

gram -
ENTERICS - GI tract
escherichia coli 
shigella
salmonella
klebsiella
proteus
enterobacter serratia 
vibrio 
campylobacter
helicobacter
pseudomonas bacteroides (anaerobic)
haemophilus
bordetella
legionella
yersinia
francisella
brucella
pasteurella
gardnerella

Question 21

spiral

Answer 21

gram -

Treponema, Borrelia, Leptospira

Question 22

branching filamentous growth

Answer 22

gram +
actinomyces (anaerobic)
nocardia (partially acid fast)

Question 23

pleomorphic

Answer 23

gram -
chlamydia
rickettsiae

Question 24

no cell wall

Answer 24

Mycoplasma

Question 25

obligate aerobes

Answer 25

gram + nocardia bacillus cereus ``` gram - neisseria pseudomonas bordetella legionella brucella ``` acid fast mycobacterium nocardia

Question 26

facultative anaerobes

Answer 26

``` gram + staphylococcus bacillus anthracis corynebacterium listeria actinomyces ``` gram - most other gram - rods no cell wall mycoplasma

Question 27

microaerophilic

Answer 27

gram + streptococcus ``` gram - spirochetes Treponema Borrelia Leptospira campylobacter ```

Question 28

obligate

Answer 28

gram + clostridium gram - bacteroides