Which of the following chromosome
breaks are the most easily repaired?
None can be repaired
Double-strand breaks
Single-strand breaks
Small base-pair lesions
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, Small base-pair lesions
Small base-pair lesions are the most
easily repaired. This is because these
breaks require the least amount of
damage compared to the other
chromosome breaks.
Which two of the following radiation
interactions with matter will not result in ionization? (Select two)
Compton scattering
Photoelectric effect
Coherent scattering
Transmission
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Coherent scattering
Transmission
Coherent scattering does not result in
ionization. lonization is the gain or loss
of an electron. In a coherent
interaction, the electrons become
excited by a photon, but no ionization
occurs. The photon is simply re-
emitted with all of its original energy.
Transmission does not result in
ionization as the photon passes
through matter without any interaction
of energy exchange.
Both Compton and photoelectric
, effects cause an atom to lose an
electron, and, therefore, are not the
correct choice.
As tissue density decreases, photon
attenuation will:
Decrease
Increase
Remain the same
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Decrease
As tissue density decreases, photon
attenuation will decrease as well. This
is because the less dense the tissue,
the fewer photons that are able to be
absorbed.
What is the source of x-radiation in the x- ray tube?
Tube window
Filament
Focusing cup
Actual focal spot
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breaks are the most easily repaired?
None can be repaired
Double-strand breaks
Single-strand breaks
Small base-pair lesions
Give this one a try later!
, Small base-pair lesions
Small base-pair lesions are the most
easily repaired. This is because these
breaks require the least amount of
damage compared to the other
chromosome breaks.
Which two of the following radiation
interactions with matter will not result in ionization? (Select two)
Compton scattering
Photoelectric effect
Coherent scattering
Transmission
Give this one a try later!
Coherent scattering
Transmission
Coherent scattering does not result in
ionization. lonization is the gain or loss
of an electron. In a coherent
interaction, the electrons become
excited by a photon, but no ionization
occurs. The photon is simply re-
emitted with all of its original energy.
Transmission does not result in
ionization as the photon passes
through matter without any interaction
of energy exchange.
Both Compton and photoelectric
, effects cause an atom to lose an
electron, and, therefore, are not the
correct choice.
As tissue density decreases, photon
attenuation will:
Decrease
Increase
Remain the same
Give this one a try later!
Decrease
As tissue density decreases, photon
attenuation will decrease as well. This
is because the less dense the tissue,
the fewer photons that are able to be
absorbed.
What is the source of x-radiation in the x- ray tube?
Tube window
Filament
Focusing cup
Actual focal spot
Give this one a try later!
