Radiation Biology

Question 1

stochastic

Answer 1

random/unpredictable effects

as exposure increases, probability of effects increases

dose doesn’t have an affect on severity of effects

cancers, genetic mutations

Question 2

deterministic effects

Answer 2

predictable effects

at a predictable exposure threshold, certain effects will appear

cataracts, epilation, skin erythema

Question 3

direct effect

Answer 3

photon interacts with DNA molecule (uncommon)

Question 4

indirect effect

Answer 4

photon interacts with water in cell (most common) which will then damage DNA

Question 5

base lesions

Answer 5

easily repaired

Question 6

single strand breaks

Answer 6

usually repaired

Question 7

double strand breaks

Answer 7

unrepaired (death, mutation)

Question 8

short term effects

Answer 8

occur within a few days or hours

skin burns, hair loss, diminished sperm count, ARS

are deterministic effects

Question 9

long term effects

Answer 9

occur years after exposure

cancer, genetic effects, cataracts

most are stochastic

Question 10

somatic

Answer 10

harm caused to the body of the exposed person

Question 11

genetic

Answer 11

harm passed on to future generations through harm caused to reproductive cells