Bac Structure/Function Flashcards Preview

POM Exam 1 > Bac Structure/Function > Flashcards

Flashcards in Bac Structure/Function Deck (27):
1

LTA

lipotechoic acid, Gram positive

2

Staphylococcus

gram positive

3

Streptococcus

gram positive

4

Bacillus

gram positive

5

Peptidoglycan cell wall and outer membrane

gram negative

6

very thick peptidoglycan cell wall

gram positive

7

LPS and endotoxin

gram negative

8

O-antigen

gram negative

9

more likely to have pili

gram negative

10

Escherichia and E. coli

gram negative

11

most spirochetes

gram negative

12

no cell wall, pleomorphic

Mycoplasma spp

13

acid fast bacilli

Mycobacterium spp (TB)

14

Mycoplasma vs Mycobacterium

No cell wall and simple structures on outside vs has cell wall and thick waxy outer membrane-like surface with mycolic acid and unusual sugars

15

Strepto

chain

16

Staphylo

cluster

17

LPS structure contains:

Lipid A, stacked sugars (core sugars +/- repeating O antigen)

18

Endotoxin is the same as

Lipid A

19

Envelope

everything from plasma membrane outwards, but not including extracellular polysaccharide capsule

20

Capsule

slimy gelatinous surface structure

21

What holds capsule to cell?

Covalent bonds, not physically anchored

22

What is main function of capsule?

Anti-phagocytosis

Minor function: protection

23

Disease causing microbes that have a capsule are often what?

Invasive fungi like pneumonia or meningitis

24

Pili vs flagellum functions?

Pili mediate attachment to host cells, exchange genetic info, twitch mobility, and biofilm formation; flagellum are for locomotion

25

Pili vs flagellum structure?

Pili made of pilin subunits; Flagellum made of flagellin subunits (H-antigen) attached to motor

26

H-antigen is AKA...

Flagellin

27

O-antigen is AKA...

saccharides in LPS