Topic 49 Flashcards
1
Q
What is ionisation a form of?
A
Energy Transfer
2
Q
What kind of radiation is dangerous to the body?
A
Ionising
3
Q
Which two theories explain the damage caused by ionising radiation?
A
Target Theory
Water Activation Theory
4
Q
What is target theory?
A
A photon hits a biological object, e.g DNA like a bullet
Direct radiation effect
5
Q
What is water activation theories
A
Radiation causes water to become hydrogen peroxide, causing damage
Indirect radiation effect
6
Q
What does the shape of surviving curves depend on
A
Number of hits needed to kill organism
The dose
