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RT 244 ch 33,34study
extra study questions
Question | Answer |
---|---|
The lethal effects of radiation are determined by: | observing cell survival |
An interaction between radiation and cellular components occur: | randomly |
Direct ionizing effect is more likely to occur with: | high LET |
What are examples of main-chain scission? | 1.one side rail severed 2.subsequent cross-linking 3.both side rails severed |
The maximum number of hits will be produced by _____ effect with ______ LET. | direct/high |
What type of damage will destroy the triplet code and may not be reversible? | point mutations/molecular lesion of DNA |
Higher LET ____ the oxygen effect. | decreases |
Point lesions are thought to be the cellular radiation damage that results in: | stochastic effects |
The average dose required to cause death is? | mean lethal dose |
What are characteristics of a free radical? | 1.chemically unstable 2.highly reactive 3.lifetime of less than 1 ms |
During radiolysis, what is the most damaging product to human cell that can be made from joining of OH free radicals? | hydrogen peroxide |
What is the normal proliferation rate of a normal human cell? | 24hrs |