Bacterial Spores Flashcards
1
Q
Which is the most resistant class of spore
A
Endospores
2
Q
Why are bacterial spores produced?
A
To survive in harsh conditions
3
Q
What are endospore layers? (4)
A
Core,cortex,coat and exosporium
4
Q
How is the endospore cortex made?
A
It is made of two layers: one thin ( similar to cell wall) one thick, which is a modified peptidoglycan.
2 DIFFERENCES:
1) less cross linking
2) most muramic acid converted to muramic B lactam
5
Q
How are endospores stained?
A
Through Malachite Green staining
6
Q
Which bacteria make cysts?
A
Azotobacter spp
7
Q
Why are Heterocysts found in Cyanobacteria?
A
Because they allow fixation of Nitrogen in a anaerobic environment separated from the rest of cell where aerobic photosynthesis occurs
