Question 1

How does computed tomography (CT)differ from standard x-ray imaging?

Accepted Answer

A)  CT scans involve software as well as x-ray imaging. 
B)  CT scans use an array of detectors. 
C)  CT scans are 3D; X-rays are 2D. 
D)  All of the above list how CT scans differ from x-ray imaging. 
A)  CT scans involve software as well as x-ray imaging. 
B)  CT scans use an array of detectors. 
C)  CT scans are 3D; X-rays are 2D. 
D)  All of the above list how CT scans differ from x-ray imaging.

Question 2

What sort of information do the units used in this table take into account?

Accepted Answer

A)  energy of the radiation 
B)  penetrating ability of the radiation 
C)  quality factor of the radiation 
D)  quantity of the radiation 
E)  All of the above are taken into account. 
A)  energy of the radiation 
B)  penetrating ability of the radiation 
C)  quality factor of the radiation 
D)  quantity of the radiation 
E)  All of the above are taken into account.

Question 3

Which of the following is NOT a building block element?

Accepted Answer

A)  C 
B)  H 
C)  O 
D)  N 
E)  These are all building block elements. 
A)  C 
B)  H 
C)  O 
D)  N 
E)  These are all building block elements.

Question 4

Radioisotopes used in medicine typically have short half-lives.Which of the following statements BEST describes the reason for this?

Accepted Answer

A)  It minimizes the harmful side effects of the radiation. 
B)  They are the isotopes that are the easiest to make. 
C)  These radioisotopes occur naturally. 
D)  Only small amounts of them are required. 
E)  These radioisotopes emit the correct type of radioactive particle. 
A)  It minimizes the harmful side effects of the radiation. 
B)  They are the isotopes that are the easiest to make. 
C)  These radioisotopes occur naturally. 
D)  Only small amounts of them are required. 
E)  These radioisotopes emit the correct type of radioactive particle.

Question 5

Which statement about the model of the atom is TRUE?

Accepted Answer

A)  The nucleus is much less dense than the surrounding electrons. 
B)  Electrons orbit the nucleus like planets around the Sun. 
C)  This is the first model of the atom. 
D)  The atom is mostly empty space. 
E)  The model of the atom was developed by looking directly at an atom. 
A)  The nucleus is much less dense than the surrounding electrons. 
B)  Electrons orbit the nucleus like planets around the Sun. 
C)  This is the first model of the atom. 
D)  The atom is mostly empty space. 
E)  The model of the atom was developed by looking directly at an atom.

Question 6

_____ are the subatomic particles that have the smallest mass.

Accepted Answer

A)  Protons 
B)  Neutrons 
C)  Electrons 
D)  Protons and neutrons 
E)  Protons, neutrons, and electrons 
A)  Protons 
B)  Neutrons 
C)  Electrons 
D)  Protons and neutrons 
E)  Protons, neutrons, and electrons

Question 7

_____ make up the majority of compounds found in living organisms.

Accepted Answer

A)  Building-block elements 
B)  Macronutrients 
C)  Micronutrients 
D)  Metals 
E)  Metalloids 
A)  Building-block elements 
B)  Macronutrients 
C)  Micronutrients 
D)  Metals 
E)  Metalloids

Question 8

What is the relationship between the energy and the wavelength of light?

Accepted Answer

A)  They are proportional. 
B)  They are inversely proportional. 
C)  As one increases, so does the other, but not in a linear way. 
D)  As one increases, the other decreases, but not in a predictable way. 
E)  They are unrelated in any way. 
A)  They are proportional. 
B)  They are inversely proportional. 
C)  As one increases, so does the other, but not in a linear way. 
D)  As one increases, the other decreases, but not in a predictable way. 
E)  They are unrelated in any way.

Question 9

What type of radiation is emitted when U-235 undergoes radioactive decay?

Accepted Answer

A)  alpha particle 
B)  beta particle 
C)  positron 
D)  gamma ray 
E)  x-ray 
A)  alpha particle 
B)  beta particle 
C)  positron 
D)  gamma ray 
E)  x-ray

Question 10

What sort of protection should be used when working with gamma emitters?

Accepted Answer

A)  a lead shield 
B)  heavy clothing 
C)  a sheet of aluminum 
D)  a very thick slab of concrete 
E)  None is needed at all because they are not very penetrating. 
A)  a lead shield 
B)  heavy clothing 
C)  a sheet of aluminum 
D)  a very thick slab of concrete 
E)  None is needed at all because they are not very penetrating.

Question 11

_____ is an important component of hemoglobin.Without this protein, tissues become starved of oxygen, and fatigue and shortness of breath results.

Accepted Answer

A)  Iodine 
B)  Fluorine 
C)  Zinc 
D)  Iron 
E)  Oxygen 
A)  Iodine 
B)  Fluorine 
C)  Zinc 
D)  Iron 
E)  Oxygen

Question 12

The process in which a nucleus spontaneously breaks down by emitting radiation is known as

Accepted Answer

A)  fusion. 
B)  fission. 
C)  a chain reaction. 
D)  reaction. 
E)  radioactive decay. 
A)  fusion. 
B)  fission. 
C)  a chain reaction. 
D)  reaction. 
E)  radioactive decay.

Question 13

The time that it takes a macroscopic sample of a radioisotope to decay to one-half its original activity is known as the

Accepted Answer

A)  reaction rate. 
B)  kinetics. 
C)  half-life. 
D)  lifetime. 
E)  decay rate. 
A)  reaction rate. 
B)  kinetics. 
C)  half-life. 
D)  lifetime. 
E)  decay rate.

Question 14

Which element is depicted in this drawing of a neutral atom?

Accepted Answer

A)  beryllium 
B)  magnesium 
C)  oxygen 
D)  neon 
E)  calcium 
A)  beryllium 
B)  magnesium 
C)  oxygen 
D)  neon 
E)  calcium

Question 15

According to the periodic table, how many energy levels do the elements in the third row have?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  It depends on the specific element. 
A)  1 
B)  2 
C)  3 
D)  4 
E)  It depends on the specific element.

Question 16

What is the mass number of an atom of oxygen with seven neutrons?

Accepted Answer

A)  1 
B)  7 
C)  8 
D)  15 
E)  15.9994 
A)  1 
B)  7 
C)  8 
D)  15 
E)  15.9994

Question 17

According to the periodic table, what types of elements are in group 2A?

Accepted Answer

A)  transition metals 
B)  noble gases 
C)  alkaline earth metals 
D)  alkali metals 
E)  halogens 
A)  transition metals 
B)  noble gases 
C)  alkaline earth metals 
D)  alkali metals 
E)  halogens

Question 18

According to the periodic table, the atomic number of potassium (K)is ______.

Accepted Answer

A)  4 
B)  19 
C)  39.10 
D)  K 
E)  2 
A)  4 
B)  19 
C)  39.10 
D)  K 
E)  2

Question 19

Which of the following radioisotope would be LEAST likely to be used in a medical application?

Accepted Answer

A)  barium-131 (half-life = 11.6 days) 
B)  iodine-131 (half-life = 8 days) 
C)  technecium-99m (half-life = 6 hours) 
D)  plutonium-239 (half-life = 2.4 × 104 years) 
E)  fluorine-18 (109 minutes) 
A)  barium-131 (half-life = 11.6 days) 
B)  iodine-131 (half-life = 8 days) 
C)  technecium-99m (half-life = 6 hours) 
D)  plutonium-239 (half-life = 2.4 × 104 years) 
E)  fluorine-18 (109 minutes)

Question 20

How is a beta particle different from an electron?

Accepted Answer

A)  They are the same. 
B)  A beta particle has higher energy than a regular electron 
C)  A regular electron has higher energy than a beta particle. 
D)  A beta particle is positively charged. 
E)  A beta particle is positively charged and higher in energy than a regular electron. 
A)  They are the same. 
B)  A beta particle has higher energy than a regular electron 
C)  A regular electron has higher energy than a beta particle. 
D)  A beta particle is positively charged. 
E)  A beta particle is positively charged and higher in energy than a regular electron.

How does computed tomography (CT)differ from standard x-ray imaging?

What sort of information do the units used in this table take into account?

Which of the following is NOT a building block element?

Radioisotopes used in medicine typically have short half-lives.Which of the following statements BEST describes the reason for this?

Which statement about the model of the atom is TRUE?

_____ are the subatomic particles that have the smallest mass.

_____ make up the majority of compounds found in living organisms.

What is the relationship between the energy and the wavelength of light?

What type of radiation is emitted when U-235 undergoes radioactive decay?

What sort of protection should be used when working with gamma emitters?

_____ is an important component of hemoglobin.Without this protein, tissues become starved of oxygen, and fatigue and shortness of breath results.

The process in which a nucleus spontaneously breaks down by emitting radiation is known as

The time that it takes a macroscopic sample of a radioisotope to decay to one-half its original activity is known as the

Which element is depicted in this drawing of a neutral atom?

According to the periodic table, how many energy levels do the elements in the third row have?

What is the mass number of an atom of oxygen with seven neutrons?

According to the periodic table, what types of elements are in group 2A?

According to the periodic table, the atomic number of potassium (K)is ______.

Which of the following radioisotope would be LEAST likely to be used in a medical application?

How is a beta particle different from an electron?

Matter, Energy, and Measurement

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

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Exam 2: Atomic Structure and Radioisotopes

How does computed tomography (CT)differ from standard x-ray imaging?

What sort of information do the units used in this table take into account?

Which of the following is NOT a building block element?

Radioisotopes used in medicine typically have short half-lives.Which of the following statements BEST describes the reason for this?

Which statement about the model of the atom is TRUE?

_____ are the subatomic particles that have the smallest mass.

_____ make up the majority of compounds found in living organisms.

What is the relationship between the energy and the wavelength of light?

What type of radiation is emitted when U-235 undergoes radioactive decay?

What sort of protection should be used when working with gamma emitters?

_____ is an important component of hemoglobin.Without this protein, tissues become starved of oxygen, and fatigue and shortness of breath results.

The process in which a nucleus spontaneously breaks down by emitting radiation is known as

The time that it takes a macroscopic sample of a radioisotope to decay to one-half its original activity is known as the

Which element is depicted in this drawing of a neutral atom?

According to the periodic table, how many energy levels do the elements in the third row have?

What is the mass number of an atom of oxygen with seven neutrons?

According to the periodic table, what types of elements are in group 2A?

According to the periodic table, the atomic number of potassium (K)is ______.

Which of the following radioisotope would be LEAST likely to be used in a medical application?

How is a beta particle different from an electron?

Matter, Energy, and Measurement

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters