FUN 1 EO: 1.25 - Radiation Protection Tech.

FUN 1 EO: 1.25

1 / 10

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

Leakage of beneficial materials

Formation of free radicals

Disassociation of water

Ionization & Excitation of atoms making up the cell

2 / 10

What initiates the biological effects of radiation in cells?

Reduction of atoms

Ionization of atoms

Multiplication of atoms

Absorption of atoms

3 / 10

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

Nucleus

Cell Membrane

Cytoplasm

Mitochondria

4 / 10

How does radiation primarily affect the nucleus of a cell?

Causes immediate rupture of the nucleus

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

Disrupts energy storage in the nucleus

Increases permeability and leakage

5 / 10

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

500 - 1,000 rad

3,000 - 5,000 rad

100 - 500 rad

1,000 - 3,000 rad

6 / 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

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

The cell begins to regenerate rapidly

7 / 10

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

Increases permeability

Negligible effect

Immediate rupture

Severe damage

8 / 10

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

H2 + OH = H2O2

H + OH = H2O2

H + H = H2O2

OH + OH = H2O2

9 / 10

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

Repair of mitochondria

Formation of free radicals

Ionization of the nucleus

Rupture of the cell membrane

10 / 10

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

Leads to the immediate death of the cell

Disrupts the function and interrupts the storage of energy via ATP

Causes the cell to multiply

Repairs itself within a short time

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