CALIFORNIA SUPERVISOR AND
OPERATOR ASRT EXAM STUDYGUIDE
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
(unit 1) What percentage of the human body is made up of
water molecules?
a. 20
b. 40
c. 60
d. 80 - ANSWERS-d. 80
(unit 1) A function of carbohydrates in the body is to
provide:
a. Immunity
b. Red blood cell production
,c. Fuel for cell metabolism
d. Glucose and fats to cells - ANSWERS-c. Fuel for cell
metabolism
(unit 1) According to the article, the characteristic that best
identifies a natural source of radiation is the ability to:
a. Spontaneously emit excess energy
b. Emit excess energy when excited by x-rays
c. Avoid decay.
d. Glow in the dark. - ANSWERS-a. Spontaneously emit
excess energy
(unit 1) Of the 5 types of possible interactions between
ionizing radiation and tissues, which 3 occur at energies
within the diagnostic range of 20 to 150 kV?
a. Bremsstrahlung, Compton, general scatter
b. Photoelectric, Compton, classical
c. Photoelectric, bremsstrahlung, classical
d. Classical, Compton, pair production - ANSWERS-b.
Photoelectric, Compton, classical
(unit 1) The effective dose measurement was created to:
,a. Provide a dose quantity related to the probability of
damaging health due to stochastic effects from exposure to
low levels of ionizing radiation.
b. Calculate exact dose received by target organs.
c. Track radiation exposure rates in a national radiation
exposure database.
d. Help radiation health physicists approve equipment by
ensuring that an accurate dose was received. - ANSWERS-a.
Provide a dose quantity related to the probability of
damaging health due to stochastic effects from exposure to
low levels of ionizing radiation.
(unit 1) Exact tissue and organ dose absorbed can be
calculated easily using indicators on modern imaging
equipment such as CT scanners and image intensifiers.
a. True
b. False - ANSWERS-b. False
(unit 1) Half-life is defined as:
a. The amount of time it takes an x-ray to reach its target.
b. The amount of time it takes to generate a wavelength
equivalent to an x-ray.
c. A radioactive element's rate of decay.
, d. How long it takes for an element to release half of its
energy. - ANSWERS-c. A radioactive element's rate of decay.
(unit 1) Of the electromagnetic radiation forms, ___ have
(has) the lowest energy and ___ the highest.
a. Visible light; gamma rays
b. Radio waves; ultraviolet rays
c. Ultraviolet rays; x-rays
d. Radio waves; gamma rays - ANSWERS-d. Radio waves;
gamma rays
(unit 1) Wavelength is defined by the:
a. Height of an energetic waveform.
b. Distance between 2 peaks of a waveform.
c. Length of the entire waveform.
d. Distance between 2 valleys in a waveform. - ANSWERS-b.
Distance between 2 peaks of a waveform.
(unit 1) What 4 nitrogenous bases make up the "ladder
rungs" of the DNA double helix?
a. Adenine, guanine, thymine, cytosine
OPERATOR ASRT EXAM STUDYGUIDE
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
(unit 1) What percentage of the human body is made up of
water molecules?
a. 20
b. 40
c. 60
d. 80 - ANSWERS-d. 80
(unit 1) A function of carbohydrates in the body is to
provide:
a. Immunity
b. Red blood cell production
,c. Fuel for cell metabolism
d. Glucose and fats to cells - ANSWERS-c. Fuel for cell
metabolism
(unit 1) According to the article, the characteristic that best
identifies a natural source of radiation is the ability to:
a. Spontaneously emit excess energy
b. Emit excess energy when excited by x-rays
c. Avoid decay.
d. Glow in the dark. - ANSWERS-a. Spontaneously emit
excess energy
(unit 1) Of the 5 types of possible interactions between
ionizing radiation and tissues, which 3 occur at energies
within the diagnostic range of 20 to 150 kV?
a. Bremsstrahlung, Compton, general scatter
b. Photoelectric, Compton, classical
c. Photoelectric, bremsstrahlung, classical
d. Classical, Compton, pair production - ANSWERS-b.
Photoelectric, Compton, classical
(unit 1) The effective dose measurement was created to:
,a. Provide a dose quantity related to the probability of
damaging health due to stochastic effects from exposure to
low levels of ionizing radiation.
b. Calculate exact dose received by target organs.
c. Track radiation exposure rates in a national radiation
exposure database.
d. Help radiation health physicists approve equipment by
ensuring that an accurate dose was received. - ANSWERS-a.
Provide a dose quantity related to the probability of
damaging health due to stochastic effects from exposure to
low levels of ionizing radiation.
(unit 1) Exact tissue and organ dose absorbed can be
calculated easily using indicators on modern imaging
equipment such as CT scanners and image intensifiers.
a. True
b. False - ANSWERS-b. False
(unit 1) Half-life is defined as:
a. The amount of time it takes an x-ray to reach its target.
b. The amount of time it takes to generate a wavelength
equivalent to an x-ray.
c. A radioactive element's rate of decay.
, d. How long it takes for an element to release half of its
energy. - ANSWERS-c. A radioactive element's rate of decay.
(unit 1) Of the electromagnetic radiation forms, ___ have
(has) the lowest energy and ___ the highest.
a. Visible light; gamma rays
b. Radio waves; ultraviolet rays
c. Ultraviolet rays; x-rays
d. Radio waves; gamma rays - ANSWERS-d. Radio waves;
gamma rays
(unit 1) Wavelength is defined by the:
a. Height of an energetic waveform.
b. Distance between 2 peaks of a waveform.
c. Length of the entire waveform.
d. Distance between 2 valleys in a waveform. - ANSWERS-b.
Distance between 2 peaks of a waveform.
(unit 1) What 4 nitrogenous bases make up the "ladder
rungs" of the DNA double helix?
a. Adenine, guanine, thymine, cytosine
