Mutations in genes and DNA that occur at random as natural phenomena are called:

As LET increases, the ability of ionizing radiation to cause biologic effects:

 _________ of the effects of x-radiation on cells of the body occur as a result of indirect action.

The clinical symptoms that occur immediately after an acute radiation exposure describes the stage known as 

 If a quantity of ionizing radiation is delivered to a body over a long period of time, the effect:

In reference to acute radiation syndrome, which of the following characterizes the period of time that the exposed individual would be asymptomatic?

 The presence of oxygen in a cell _____________ the biological effects that will occur and ___________ the probability of the cell being able to recover from the damage.

 The LD 50/60 is representative of the dose:

 Which of the following tissues contain cells that do not divide?1. Epithelial tissue 2. Blood cells 3. Nervous tissue in the adult

Identify the sensitivity of the following types of cell or tissue A. Radiosensitive (more sensitive)            B. Radio-insensitive (less sensitive) 74. _____ nervous tissue 75. _____ neutrophils 76. _____ non specialized cells 77. _____ cells with a low metabolism 78. _____ cells with low mitotic activity 79. _____ muscle tissue