Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
Agents that increase the number of mutations above background levels |
MUTAGEN |
|
Agents that cause damage to the DNA can lead to _________ |
MUTATIONS |
|
________ normally screens out much of the harmful UV radiation in sunlight |
OZONE |
|
Repair system that targets a specific lesion in the DNA and repairs only that damage |
SPECIFIC REPAIR * |
|
Repair system that uses a single mechanism that repairs multiple kinds of lesions in DNA |
NON-SPECIFIC REPAIR* |
|
EXAMPLE USED IN CH 14 OF A SPECIFIC REPAIR FOR DNA MUTATED BY UV LIGHT |
PHOTOREPAIR |
|
UV radiation causes a mutation where thymine reacts and covalently links them together |
THYMINE DIMER |
|
NON SPECIFIC repair mechanism example in which a damaged region is removed and is then replace by DNA synthesis |
EXCISION REPAIR |
|
EXCISION REPAIRS THREE STEPS (R's): in E. coli |
RECOGNITION (UvrABC completes) REMOVAL (UvrABC completes) RESYNTHESIS (UvrABC binds to damage and the cleaves a single stand on either side of the damage, removing it) |
|
IN THE SYNTHESIS STAGE OF EXCISION REPAIR DNA POL ___ OR POL ____ REPLACES THE DAMAGED DNA |
POLYMERASE 1 POLYMERASE 2 |