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Chapter 1 Quiz
Essentials of Radiation Biology and Protection 2nd Edition
Question | Answer |
---|---|
What is the branch of science concerned with the methods of interaction adn teh effects of ionizing radiation on living systems? | Radiobiology |
Who is credited with the discovery of x-rays in 1895? | Wilhelm Conrad Roentgen |
Who is credited with the observance of rays being given off by a uranium-coating substance in 1896? | Antoine Henri Becquerel |
Who is credited with the discovery of radium in 1898? | Pierre adn Marie Curie |
Who was the assistant to Thomas Edison, who died of complications from exposure to radiation? | Clarence Dally |
Who, in 1906 observed the effect of radiation by exposing rodent testicles to x-rays? | Bergonie and Tribondeau |
Who, in 1925 observed the effects of radiation by exposing mammals to x-rays? | Ancel and Vitemberger |
Who, in the 1920's observed the effects of radiation by exposing sheep testicles to x-rays? | Regaud |
Who, in 1927 observed the effects of radiation by exposing fruit flies to x-rays? | Muller |
Who, in the 1940's observed the effects of radiation in the presence of oxygen? | Rick |
Who, in 1946 did research on the hydrolysis of water? | Lea |
Who, in 1956 observed the effects of radiation by exposing human uterine cervix cells to x-rays? | Puck and Marcus |
Regaud discovered that if original doses were broken up into smaller doses spread out over a period of time, animals would become sterile, but with considerably less damage to their skin. This is known as: | Fractionation Theory |
Muller discovered that radiation-induced mutations were the same as those produced in nature. This is known as: | Mutagenesis |
Rick discovered that oxygen increases the cell-killing effect of a given dose of radiation. This is known as: | Oxygen Effect |
Lea discoverd that hydrolysis of water resulted in free radical formation. This is known as: | Mechanism of Indirect Action |
The Law of Bergonie infers: | Stem cells are more radiosensitive than mature cells |
What is the measure of the ionizationof aire created by x- and gamma-radiation? | Roentgen(R) |
What describes the energy that is absorbed in matter from any type of ionizing radiation, and is considered to unit of absorbed dose? | rad |
What is the unit fo dose equivalent or occupational exposure? | rem |
What is the SI unit for Roentgen(R)? | Coulomb per Kilogram(c/Kg) |
What is the SI unit for rad? | Gray(Gy) |
What is the SI unit for rem? | Sievert(Sv) |
What is the SI unit for curie? | becquerel |
What is the current annual effective dose limit for occupational exposure? | 5 rem |