WGU C190- Module 5, 6, 7 Intro to Biology
EXAM UPDATED ACTUAL Exam
Questions and CORRECT Answers
Amino Acids - CORRECT ANSWER - building blocks of proteins
carbohydrates - CORRECT ANSWER - the starches and sugars present in foods
fats - CORRECT ANSWER - lipids that are solid at room temperature; composing of
glycerol and saturated fatty acids
glucose - CORRECT ANSWER - a simple sugar that is an important energy source in
living organisms and is a component of many carbohydrates; primary product (output) of
photosynthesis and primary reactant (input) of cellular respiration
hydrophillic - CORRECT ANSWER - attracted to water (polar); refers to molecules that
are water soluble
hydrophobic - CORRECT ANSWER - Having an aversion to water; molecules do not
interact with water and are characterized by complete lack of electronegative atoms
inorganic molecules - CORRECT ANSWER - simple molecules not found in living things;
molecules that do not contain both carbon and hydrogen (however could contain one) (e.g.; salts,
strong acids and bases, metal compounds)
Lipids - CORRECT ANSWER - organic macromolecules that are largely nonpolar
(electrons are evenly distributed among atoms in a molecule) and as a result are hydrophobic.
Perform many functions in the cell including storage of energy for long-term use in the form of
fats, insulation from the environment, and building blocks for hormones. Include fats, oils,
waxes, phospholipids, and steroids.
, monomer - CORRECT ANSWER - A small organic molecule that may bind chemically to
other molecules to form a polymer
Monosaccharides - CORRECT ANSWER - a simple sugar (carbohydrate) containing
carbon, hydrogen and oxygen atoms in a 1:2:1 ratio respectively.
(Glucose, fructose and ribose are examples)
Oils - CORRECT ANSWER - fats that are liquid at room temperature; a type of lipid
composed of glycerol and unsaturated fatty acids
Organic molecules - CORRECT ANSWER - molecules that contain carbon that is
covalently bonded with a hydrogen atom
Phospholipids - CORRECT ANSWER - a lipid consisting of a glycerol bound to two fatty
acids and a phosphate group.
Polymer - CORRECT ANSWER - A long molecule consisting of many similar or identical
monomers linked together.
Polysaccharides - CORRECT ANSWER - Carbohydrates that are made up of more than
two monosaccharides; often used for energy storage and structural support by organisms
protein folding - CORRECT ANSWER - the final 3-dimensional shape of proteins that
results from interactions between the amino acids in the protein
Steroids - CORRECT ANSWER - a type of lipid composed of a common carbon ring
structure. Testosterone and cholesterol are examples
Waxes - CORRECT ANSWER - Nonpolar lipids that form protective layers on plants and
animals. Simplest lipids in nature, consisting of two long hydrocarbon chains linked in the
middle by an ester group
EXAM UPDATED ACTUAL Exam
Questions and CORRECT Answers
Amino Acids - CORRECT ANSWER - building blocks of proteins
carbohydrates - CORRECT ANSWER - the starches and sugars present in foods
fats - CORRECT ANSWER - lipids that are solid at room temperature; composing of
glycerol and saturated fatty acids
glucose - CORRECT ANSWER - a simple sugar that is an important energy source in
living organisms and is a component of many carbohydrates; primary product (output) of
photosynthesis and primary reactant (input) of cellular respiration
hydrophillic - CORRECT ANSWER - attracted to water (polar); refers to molecules that
are water soluble
hydrophobic - CORRECT ANSWER - Having an aversion to water; molecules do not
interact with water and are characterized by complete lack of electronegative atoms
inorganic molecules - CORRECT ANSWER - simple molecules not found in living things;
molecules that do not contain both carbon and hydrogen (however could contain one) (e.g.; salts,
strong acids and bases, metal compounds)
Lipids - CORRECT ANSWER - organic macromolecules that are largely nonpolar
(electrons are evenly distributed among atoms in a molecule) and as a result are hydrophobic.
Perform many functions in the cell including storage of energy for long-term use in the form of
fats, insulation from the environment, and building blocks for hormones. Include fats, oils,
waxes, phospholipids, and steroids.
, monomer - CORRECT ANSWER - A small organic molecule that may bind chemically to
other molecules to form a polymer
Monosaccharides - CORRECT ANSWER - a simple sugar (carbohydrate) containing
carbon, hydrogen and oxygen atoms in a 1:2:1 ratio respectively.
(Glucose, fructose and ribose are examples)
Oils - CORRECT ANSWER - fats that are liquid at room temperature; a type of lipid
composed of glycerol and unsaturated fatty acids
Organic molecules - CORRECT ANSWER - molecules that contain carbon that is
covalently bonded with a hydrogen atom
Phospholipids - CORRECT ANSWER - a lipid consisting of a glycerol bound to two fatty
acids and a phosphate group.
Polymer - CORRECT ANSWER - A long molecule consisting of many similar or identical
monomers linked together.
Polysaccharides - CORRECT ANSWER - Carbohydrates that are made up of more than
two monosaccharides; often used for energy storage and structural support by organisms
protein folding - CORRECT ANSWER - the final 3-dimensional shape of proteins that
results from interactions between the amino acids in the protein
Steroids - CORRECT ANSWER - a type of lipid composed of a common carbon ring
structure. Testosterone and cholesterol are examples
Waxes - CORRECT ANSWER - Nonpolar lipids that form protective layers on plants and
animals. Simplest lipids in nature, consisting of two long hydrocarbon chains linked in the
middle by an ester group
