FUN 1 EO: 1.25 - Radiation Protection Tech.

FUN 1 EO: 1.25

1 / 10

How does radiation primarily affect the nucleus of a cell?

Causes immediate rupture of the nucleus

Increases permeability and leakage

Disrupts energy storage in the nucleus

Inhibits the ability of the cell to divide by affecting the DNA and RNA

2 / 10

What part of the cell is often likened to the brain?

Nucleus

Cell Membrane

Cytoplasm

Mitochondria

3 / 10

What initiates the biological effects of radiation in cells?

Absorption of atoms

Multiplication of atoms

Ionization of atoms

Reduction of atoms

4 / 10

What amount of rad is required to rupture the cell membrane?

100 - 500 rad

1,000 - 3,000 rad

500 - 1,000 rad

3,000 - 5,000 rad

5 / 10

What is one of the secondary effects of radiation interaction in a cell?

Repair of mitochondria

Rupture of the cell membrane

Formation of free radicals

Ionization of the nucleus

6 / 10

How does hydrogen peroxide (H2O2) form as a secondary effect of radiation?

OH + OH = H2O2

H + OH = H2O2

H + H = H2O2

H2 + OH = H2O2

7 / 10

What occurs when lysosome ruptures between 500 and 1,000 rad (5 - 10 gray)?

The cell's energy reserves are depleted

The cell membrane becomes impermeable

The cell begins to regenerate rapidly

Digestive enzymes are released and begin to digest the rest of the cell

8 / 10

What is the result of ionizing radiation hitting the cytoplasm of a cell?

Negligible effect

Severe damage

Increases permeability

Immediate rupture

9 / 10

What happens when mitochondria are exposed to "a few thousand" rad of radiation?

Disrupts the function and interrupts the storage of energy via ATP

Leads to the immediate death of the cell

Repairs itself within a short time

Causes the cell to multiply

10 / 10

What does the primary effect of radiation in a cell consist of?

Ionization & Excitation of atoms making up the cell

Formation of free radicals

Disassociation of water

Leakage of beneficial materials

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