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Bioenvironmental Engineering (BEE) Block 7 Practice Test

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The amount of energy absorbed per unit weight of the organ or tissue is called what?
Correct Answer:
Absorbed dose
Explanation:
The main concept is energy deposition in tissue per unit mass from radiation. That quantity is called absorbed dose. It measures how much energy the tissue actually absorbs, which is what drives potential biological effects. The unit is the gray, defined as one joule of energy absorbed per kilogram of tissue. In contrast, exposure refers to radiation in air and isn’t about energy deposited in tissue, while activity is the rate of radioactive decay. So absorbed dose is the precise term for the energy per unit mass absorbed by tissue.

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