Question
click below
click below
Question
Normal Size Small Size show me how
Mol & Cell Radiobio
Question | Answer |
---|---|
Two OH free radicals can join to form this molecule. | Hydrogen peroxide |
The disassociation of water molecules following irradiation is known as: | Radiolysis |
Indirect effects of ionizing radiation occur in this molecule. | Water |
Cross linking has what effect on viscosity. | Increases viscosity |
Direct effects of ionizing radiation occur with this molecule. | DNA |
The principal radiation interaction with thin the human body are assumed to be: | Indirect effects |
This type of DNA damage may not be reversible. | Loss or change of a nitrogen base |
Molecular lesions to DNA care also called: | Point mutations |
What happens if oxygen is present in the cell during low LET radiation? | The radiation effects will be increased. |
The threshold dose for irradiation of human cells is represented by: | DQ (subscript Q) |
Human cells are most radiosensitive during which phase of the cell cycle? | Mitosis |
The mean lethal dose form human cells is represented by: | DO (subscript O) |
What effect does high LET radiation have on the probability of a hit occurring in a human cell? | It increases the probability of a hit. |
A target molecule that is inactivated will always cause: | cell death |
The target molecule is: | DNA within the nucleus |
This is when the cell dies without attempting division during the interphase portion of the cell life cycle. | Apoptosis |
Miotic cell death is also known as: | Genetic death |
This law describes how a cells' radiosenistivity is influenced by proliferation rate and maturity. | Law of Bergonie and Tribondeau |
Apoptosis is also known as: | Interphase death |
Reproductive death occurs at a non-fractionated dose of: | 1-10 Gy |
Instant cell death can occur at a dose of ________ with gamma or x-radiation. | 1000 Gy |
A dose as low as _____ can delay cell division. | .01 Gy |