A high energy x-ray photon interacts directly with a DNA strand causing a cross-link between two places within the same strand.  This joining is termed a/an _____.

The middle layer of the skin is called the:

The fetal stage of gestation occurs from:

Which of the following statements are true in regards to low-LET radiation? It possesses substantial mass and charge. It has a wave-particle duality. It is sparsely ionizing. It is more likely to cause damage through direct action.

A form of cell death that occurs when cells dies without attempting division during the interphase portion of the cell cycle is termed:

Heredity disorders are common in any population.  In humans, a genetic disorder is present in approximately _____ of all live births in the United States.

Which of the following are described as having a sigmoid, threshold dose-response relationship?

Choose the four (4) statements that accurately describe the blood cells in the human body:

In which of the following types of cellular responses to radiation is the cell able to continue to metabolize and synthesize nucleic acids and proteins, but loses its ability to procreate?

List the following acute radiation syndromes from the least to the most severe: Cerebrovascular syndrome Gastrointestinal syndrome Hematopoietic syndrome