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Mol & Cell Radiobio

QuestionAnswer
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
Created by: mlegler
 

 



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