WGU C190 - Introduction to Biology -
Unit 2: Modules 4-10 Questions with
complete solution 2026
Biological macromolecules are: - correct answer ✔special molecules that contain carbon atoms
covalently bonded with hydrogen atoms
Atoms are made of small subatomic particles called: - correct answer ✔protons, neutrons, and
electrons
Proton electrical charge: - correct answer ✔positive
Neutron electrical charge: - correct answer ✔neutral, neither positive nor negative
The nucleus has what kind of charge? - correct answer ✔a positive overall charge since the protons
are in it with the neutrons
Protons and neutrons have a mass of what? - correct answer ✔1 atomic mass unit (amu)
Electron electrical charge: - correct answer ✔negative
Electrons are found where? - correct answer ✔outside of the nucleus in the "shells"
Electron has a mass of what? - correct answer ✔nearly nothing, negligible 0 amu
When the number of protons equals the number of electrons, then the atom is: - correct answer
✔electrically neutral
Unit 2: Modules 4-10 Questions with
complete solution 2026
Biological macromolecules are: - correct answer ✔special molecules that contain carbon atoms
covalently bonded with hydrogen atoms
Atoms are made of small subatomic particles called: - correct answer ✔protons, neutrons, and
electrons
Proton electrical charge: - correct answer ✔positive
Neutron electrical charge: - correct answer ✔neutral, neither positive nor negative
The nucleus has what kind of charge? - correct answer ✔a positive overall charge since the protons
are in it with the neutrons
Protons and neutrons have a mass of what? - correct answer ✔1 atomic mass unit (amu)
Electron electrical charge: - correct answer ✔negative
Electrons are found where? - correct answer ✔outside of the nucleus in the "shells"
Electron has a mass of what? - correct answer ✔nearly nothing, negligible 0 amu
When the number of protons equals the number of electrons, then the atom is: - correct answer
✔electrically neutral
