WGU C190 INTRO TO BIOLOGY ACTUAL OA EXAM
2025/2026 COMPLETE TEST APPROVED QUESTIONS
AND CORRECT VERIFIED ANSWERS (A NEW
UPDATED VERSION) |GUARANTEED PASS A+
(BRAND NEW!) WGU C190 OA
Abiotic - Answer-Non-living, may be within or made by a living organism.
Biotic - Answer-Living. Matter is considered ______ if it was ever alive at some
point in time
Atom - Answer-Smallest level. The basic unit of matter. Consists of a dense
nucleus surrounded by electrons.
Molecule - Answer-Second level. A chemical structure consisting of at least two
atoms held together by a chemical bond.
Macromolecule - Answer-Third level. Biologically important molecules that are
technically polymers. Example: DNA.
Cell - Answer-Fourth level. The fundamental unit of life. Essentially a tiny droplet
of water and other molecules enclosed by a fluid "skin" or membrane. The
smallest and simplest entity that possesses all the characteristics of life.
,Organelle - Answer-Fifth level. Compartments inside the cell that contain specific
groups of macromolecules and carry out specific cellular functions. One of these
organelles is the nucleus; it encloses the DNA within the cell.
Microorganism - Answer-Sixth level. Single-celled life form. Consists of just one
cell and include unicellular organisms such as bacteria and protists.
Atomic Mass - Answer-The sum of the number of protons and the number of
neutrons. The mass of an atom.
Atomic Number - Answer-The number of protons in an atom, displayed for each
atom in the periodic table.
Chemical Bonds - Answer-Attractions between atoms that hold atoms and
molecules together.
Covalent Bonds - Answer-Strongest chemical bond. Occurs between atoms of in
the same molecule. Electron pairs are shared, creating a strong bond between
atoms.
electron - Answer-Subatomic particle, located in shells on the outside of the
nucleus, has a negative charge and almost no mass.
electronegativity - Answer-A measure of the tendency of an atom to attract a
bonding pair of electrons. How strongly does an atoms attract bonding electrons
to itself?
,element - Answer-Atoms with unique properties, designated by the atomic
number.
hydrogen bond - Answer-Weak chemical bond. Occurs between atoms in different
molecules or parts of molecules. Weak electrostatic attraction between areas of
molecules with opposite partial charges.
ion - Answer-Positively or negatively charged atom.
ionic bond - Answer-Moderately strong chemical bond. Occurs between atoms in
the same molecule. Electrons transfer from one atom to another.
isotope - Answer-Any or two or more forms of a chemical element, having the
same number of protons in the nucleus, or the same atomic number, but having
different numbers of neutrons in the nucleus, or different atomic weights.
matter - Answer-Anything that occupies space and has mass.
molecular formula - Answer-A formula giving the number of atoms of each of the
elements present in one molecule of a specific compound.
neutron - Answer-Subatomic particle, electrically neutral, located in the nucleus.
Mass of one amu
nucleus - Answer-Center of the atom. Contains equal number of protons and
neutrons.
, Periodic Table - Answer-Chart organizing elements by atomic number and weight.
proton - Answer-Subatomic particle, located in the nucleus, with a positive
charge. Mass of one amu.
valence electron - Answer-Electrons on the outermost shell of the atom. Involved
in chemical bonds.
Adhesion - Answer-The attraction between water molecules and other molecules.
Cohesion - Answer-Water molecules are attracted to each other, keeping the
molecules together.
Hydrophilic - Answer-Substances that will dissolve in water. Polar. They split into
positive and negative ions and dissolve in water. Examples: sugars and alcohols.
Hydrophobic - Answer-Substances that do not dissolve in water. Non-polar.
Examples: hydrocarbons and fatty acids.
Surface Tension - Answer-The capacity of a liquid's surface to resist being
ruptured when placed under tension or stress.
Solute - Answer-The component(s) present in lower quantities.
2025/2026 COMPLETE TEST APPROVED QUESTIONS
AND CORRECT VERIFIED ANSWERS (A NEW
UPDATED VERSION) |GUARANTEED PASS A+
(BRAND NEW!) WGU C190 OA
Abiotic - Answer-Non-living, may be within or made by a living organism.
Biotic - Answer-Living. Matter is considered ______ if it was ever alive at some
point in time
Atom - Answer-Smallest level. The basic unit of matter. Consists of a dense
nucleus surrounded by electrons.
Molecule - Answer-Second level. A chemical structure consisting of at least two
atoms held together by a chemical bond.
Macromolecule - Answer-Third level. Biologically important molecules that are
technically polymers. Example: DNA.
Cell - Answer-Fourth level. The fundamental unit of life. Essentially a tiny droplet
of water and other molecules enclosed by a fluid "skin" or membrane. The
smallest and simplest entity that possesses all the characteristics of life.
,Organelle - Answer-Fifth level. Compartments inside the cell that contain specific
groups of macromolecules and carry out specific cellular functions. One of these
organelles is the nucleus; it encloses the DNA within the cell.
Microorganism - Answer-Sixth level. Single-celled life form. Consists of just one
cell and include unicellular organisms such as bacteria and protists.
Atomic Mass - Answer-The sum of the number of protons and the number of
neutrons. The mass of an atom.
Atomic Number - Answer-The number of protons in an atom, displayed for each
atom in the periodic table.
Chemical Bonds - Answer-Attractions between atoms that hold atoms and
molecules together.
Covalent Bonds - Answer-Strongest chemical bond. Occurs between atoms of in
the same molecule. Electron pairs are shared, creating a strong bond between
atoms.
electron - Answer-Subatomic particle, located in shells on the outside of the
nucleus, has a negative charge and almost no mass.
electronegativity - Answer-A measure of the tendency of an atom to attract a
bonding pair of electrons. How strongly does an atoms attract bonding electrons
to itself?
,element - Answer-Atoms with unique properties, designated by the atomic
number.
hydrogen bond - Answer-Weak chemical bond. Occurs between atoms in different
molecules or parts of molecules. Weak electrostatic attraction between areas of
molecules with opposite partial charges.
ion - Answer-Positively or negatively charged atom.
ionic bond - Answer-Moderately strong chemical bond. Occurs between atoms in
the same molecule. Electrons transfer from one atom to another.
isotope - Answer-Any or two or more forms of a chemical element, having the
same number of protons in the nucleus, or the same atomic number, but having
different numbers of neutrons in the nucleus, or different atomic weights.
matter - Answer-Anything that occupies space and has mass.
molecular formula - Answer-A formula giving the number of atoms of each of the
elements present in one molecule of a specific compound.
neutron - Answer-Subatomic particle, electrically neutral, located in the nucleus.
Mass of one amu
nucleus - Answer-Center of the atom. Contains equal number of protons and
neutrons.
, Periodic Table - Answer-Chart organizing elements by atomic number and weight.
proton - Answer-Subatomic particle, located in the nucleus, with a positive
charge. Mass of one amu.
valence electron - Answer-Electrons on the outermost shell of the atom. Involved
in chemical bonds.
Adhesion - Answer-The attraction between water molecules and other molecules.
Cohesion - Answer-Water molecules are attracted to each other, keeping the
molecules together.
Hydrophilic - Answer-Substances that will dissolve in water. Polar. They split into
positive and negative ions and dissolve in water. Examples: sugars and alcohols.
Hydrophobic - Answer-Substances that do not dissolve in water. Non-polar.
Examples: hydrocarbons and fatty acids.
Surface Tension - Answer-The capacity of a liquid's surface to resist being
ruptured when placed under tension or stress.
Solute - Answer-The component(s) present in lower quantities.
