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BIO 181 QUIZ 1 GRAND CANYON UNIVERSITY
2026 100% PASS ASSURED EXAMINATION
SOLUTIONS
Observation - correct answer- Gathering
information, either through direct use of the
senses or with the help of tools such as
microscopes, thermometers, and balances that
extend our senses. Can reveal valuable
information about the natural world
Hypothesis - correct answer- Tentative answer
to a well-framed question -- an explanation on
trial. A rational account for a set of
observations, based on the available data and
guided by inductive reasoning.
Hypothesis-Based Approach - correct answer-
Systematic trial and error
Predominant Essential Elements in Living
Matter - correct answer- Humans need 25,
plants need 17. Oxygen (O), Carbon (C),
Hydrogen (H), and Nitrogen (N) -- make up 96%
of living matter. Calcium (Ca), Phosphorus
(P), Potassium (K), Sulfur (S), and a few
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other elements account for most of the
remaining 4% of an organism's mass.
Covalent Bond - correct answer- Sharing of a
pair of valence electrons by two atoms.
Non Polar Covalent Bond - correct answer- Two
atoms of the same element share electrons
equally because the two atoms have the same
electronegativity -- the tug-of-war is at a
standoff.
Polar Covalent Bond - correct answer- When an
atom is bonded to a more electronegative atom,
the electrons of the bond are not shared
equally. (H2O).
Ionic Bond - correct answer- Opposite charges,
cations and anions attract each other. Any two
ions of opposite charge can form this. The
ions do not need to have acquired their charge
by an electron transfer with each other.
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Hydrogen Bond - correct answer- When a
hydrogen atom is covalently bonded to an
electronegative atom, the hydrogen atom has a
partial positive charge that allows it to be
attracted to a different electronegative atom
nearby. Attraction between a hydrogen and an
electronegative atom.
Van der Waals Interactions - correct answer-
Electrons are not always evenly distributed;
at any instant, they may accumulate by chance
in one part of a molecule or another. The
results are ever-changing regions of positive
and negative charge that enable all atoms and
molecules to stick to one another.
Chemical Equilibrium - correct answer- The
point at which the reactions offset one
another exactly. Dynamic equilibrium;
reactions are still going on, but with no net
effect on the concentrations of reactants and
products.
Example of a Hydrogen Bond - correct answer-
The slightly positive hydrogen of one molecule
is attracted to the slightly negative oxygen
BIO 181 QUIZ 1 GRAND CANYON UNIVERSITY
2026 100% PASS ASSURED EXAMINATION
SOLUTIONS
Observation - correct answer- Gathering
information, either through direct use of the
senses or with the help of tools such as
microscopes, thermometers, and balances that
extend our senses. Can reveal valuable
information about the natural world
Hypothesis - correct answer- Tentative answer
to a well-framed question -- an explanation on
trial. A rational account for a set of
observations, based on the available data and
guided by inductive reasoning.
Hypothesis-Based Approach - correct answer-
Systematic trial and error
Predominant Essential Elements in Living
Matter - correct answer- Humans need 25,
plants need 17. Oxygen (O), Carbon (C),
Hydrogen (H), and Nitrogen (N) -- make up 96%
of living matter. Calcium (Ca), Phosphorus
(P), Potassium (K), Sulfur (S), and a few
,2 | Page
other elements account for most of the
remaining 4% of an organism's mass.
Covalent Bond - correct answer- Sharing of a
pair of valence electrons by two atoms.
Non Polar Covalent Bond - correct answer- Two
atoms of the same element share electrons
equally because the two atoms have the same
electronegativity -- the tug-of-war is at a
standoff.
Polar Covalent Bond - correct answer- When an
atom is bonded to a more electronegative atom,
the electrons of the bond are not shared
equally. (H2O).
Ionic Bond - correct answer- Opposite charges,
cations and anions attract each other. Any two
ions of opposite charge can form this. The
ions do not need to have acquired their charge
by an electron transfer with each other.
, 3 | Page
Hydrogen Bond - correct answer- When a
hydrogen atom is covalently bonded to an
electronegative atom, the hydrogen atom has a
partial positive charge that allows it to be
attracted to a different electronegative atom
nearby. Attraction between a hydrogen and an
electronegative atom.
Van der Waals Interactions - correct answer-
Electrons are not always evenly distributed;
at any instant, they may accumulate by chance
in one part of a molecule or another. The
results are ever-changing regions of positive
and negative charge that enable all atoms and
molecules to stick to one another.
Chemical Equilibrium - correct answer- The
point at which the reactions offset one
another exactly. Dynamic equilibrium;
reactions are still going on, but with no net
effect on the concentrations of reactants and
products.
Example of a Hydrogen Bond - correct answer-
The slightly positive hydrogen of one molecule
is attracted to the slightly negative oxygen
