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BIO 181 QUIZ 1 GRAND CANYON
UNIVERSITY 2025 UPDATED ACTUAL
EXAM WITH CORRECT 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 other elements account for most of the
remaining 4% of an organism's mass.
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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.
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.
BIO 181 QUIZ 1 GRAND CANYON
UNIVERSITY 2025 UPDATED ACTUAL
EXAM WITH CORRECT 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 other elements account for most of the
remaining 4% of an organism's mass.
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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.
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.
