Microbial Growth Flashcards
(10 cards)
1
Q
bacterial growth
A
asexual reproduction or cell division of a bacterium into two daughter cells by binary fission
2
Q
binary fission
A
Cell grows roughly twice its size –> ring like septum forms –> two daughter cells
3
Q
Exponential growth
A
rapid generation time when optimal conditions are present
4
Q
Psychrophile
A
5-20 (10)
5
Q
psychrotroph
A
0-35 (30)
6
Q
mesophile
A
10-45 (37)
7
Q
thermophile
A
40-80 (68)
8
Q
hyperthermophile
A
75-112 (100)
9
Q
cells without a cell wall in:
- hypertonic solution
- hypotonic solution
A
Hypertonic: greater concentration of solutes OUTSIDE the cell, cell shrinks, water goes outside the cell
Hypotonic: cell swells, water goes into the cell
10
Q
thioglycollate medium
A
used to determine oxygen requirements by bacteria
*Top of the tube has most oxygen, bottom has none
