rad bio

Front

What molecule does an indirect effect from ionizing radiation occur on?

Back

WATER

Front

In photoelectric absorption, what must the incoming x-ray photon have?

Back

Energy larger than the binding energy of the inner orbital electron.

Front

What does LET stand for?

Back

Linear Energy Transfer.

Front

What are the cell components that contain the centrioles?

Back

CENTROSOMES.

Front

What is the RBE of diagnostic x-rays?

Back

1.0.

Front

What is ionizing radiation?

Back

Radiation that carries enough energy to liberate electrons from atoms or molecules.

Front

What is the primary effect of ionizing radiation on biological tissues?

Back

Damage to DNA.

Front

What is the difference between direct and indirect effects of radiation?

Back

Direct effects involve ionization of atoms in DNA, while indirect effects involve ionization of water molecules leading to free radicals.

Front

What is a free radical?

Back

An atom or molecule that has unpaired electrons, making it highly reactive.

Front

What is the significance of the dose-response relationship in radiation biology?

Back

It describes the relationship between the amount of radiation exposure and the biological effect.