Lab 6 Flashcards
(7 cards)
1
Q
What does UV Exposure do to cells?
A
Causes thymine-thymine dimer
2
Q
What are the three repair mechanisms?
A
1) Photolyase
2) UVR
3) SOS Response
3
Q
Photolyase
A
Revereses the dimer
4
Q
UVR
A
cuts out bad DNA and replaces it
5
Q
SOS Response
A
Uses Pol V to replace Pol III-causes many mutations
6
Q
How are MAC plates used to determine mutations?
A
Cells with mutations can not ferment lactose so they show up light pink on MAC plate
7
Q
What does survival curve show?
A
The amount of cells surviving at different UV exposure times
