WGU C190 - Introduction to Biology - Unit 2: Modules 4-10 Exam
Questions and Answers with Verified Solutions | Latest 2026 Update
Q: Biological macromolecules are:
Answer:
special molecules that contain carbon atoms covalently bonded with hydrogen
atoms
Q: Atoms are made of small subatomic particles called:
Answer:
protons, neutrons, and electrons
Q: Proton electrical charge:
Answer:
positive
Q: Neutron electrical charge:
Answer:
neutral, neither positive nor negative
Q: The nucleus has what kind of charge?
Answer:
a positive overall charge since the protons are in it with the neutrons
Q: Protons and neutrons have a mass of what?
Answer:
1 atomic mass unit (amu)
Q: Electron electrical charge:
Answer:
negative
Q: Electrons are found where?
Answer:
outside of the nucleus in the "shells"
Q: Electron has a mass of what?
, Answer:
nearly nothing, negligible 0 amu
Q: When the number of protons equals the number of electrons, then the atom is:
Answer:
electrically neutral
Q: If the number of protons differs from the number of electrons, then the atom
has an:
Answer:
electrical charge
Q: An atom with more or less protons than electrons is called an:
Answer:
ion
Q: The atomic mass is the sum of:
Answer:
the number of protons and the number of neutrons
Q: Two or more atoms combine to form a larger and more complex entity called
a:
Answer:
molecule
Q: There are three types of chemical bonds that are important in biology:
Answer:
covalent bonds, ionic bonds, and hydrogen bonds.
Q: Covalent bond properties:
Answer:
strongest, occurs between atoms in the same molecule, electron pairs are shared,
creating a strong bond between atoms
Q: Ionic bond properties:
Questions and Answers with Verified Solutions | Latest 2026 Update
Q: Biological macromolecules are:
Answer:
special molecules that contain carbon atoms covalently bonded with hydrogen
atoms
Q: Atoms are made of small subatomic particles called:
Answer:
protons, neutrons, and electrons
Q: Proton electrical charge:
Answer:
positive
Q: Neutron electrical charge:
Answer:
neutral, neither positive nor negative
Q: The nucleus has what kind of charge?
Answer:
a positive overall charge since the protons are in it with the neutrons
Q: Protons and neutrons have a mass of what?
Answer:
1 atomic mass unit (amu)
Q: Electron electrical charge:
Answer:
negative
Q: Electrons are found where?
Answer:
outside of the nucleus in the "shells"
Q: Electron has a mass of what?
, Answer:
nearly nothing, negligible 0 amu
Q: When the number of protons equals the number of electrons, then the atom is:
Answer:
electrically neutral
Q: If the number of protons differs from the number of electrons, then the atom
has an:
Answer:
electrical charge
Q: An atom with more or less protons than electrons is called an:
Answer:
ion
Q: The atomic mass is the sum of:
Answer:
the number of protons and the number of neutrons
Q: Two or more atoms combine to form a larger and more complex entity called
a:
Answer:
molecule
Q: There are three types of chemical bonds that are important in biology:
Answer:
covalent bonds, ionic bonds, and hydrogen bonds.
Q: Covalent bond properties:
Answer:
strongest, occurs between atoms in the same molecule, electron pairs are shared,
creating a strong bond between atoms
Q: Ionic bond properties:
