1|Page
UCI BIO 93- MIDTERM 1 EXAM 2025| BRAND NEW
ACTUAL EXAM WITH 100% VERIFIED QUESTIONS
AND CORRECT SOLUTIONS| GUARANTEED VALUE
PACK| ACE YOUR GRADES.
atoms - (answers)smallest unit of chemical elements
molecules - (answers)two or more atoms combined
compound - (answers)two or more elements combined in a fixed ration
C, O, H, N - (answers)... are 4 elements that make up 96% of all living matter
covalent bond - (answers)what is the strongest bond?
covalent - (answers)sharing of electrons by two atoms
ionic - (answers)transfer of electrons between two atoms
hydrogen bond - (answers)what is a weak bond?
hydrogen bond - (answers)the H atom forms one covalent bond and a second
weaker bond with an atom in another molecules
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nonpolar - (answers)equal sharing of electrons
(two of the same element)
polar - (answers)unequal sharing of electrons
has a charge
(water)
negative - (answers)what is the charge of O in water?
positive - (answers)what is the charge of H in water?
cohesion - (answers)interactions between water molecules
(H2O with H2O)
solvent - (answers)interactions between water and other molecules
4 bonds - (answers)what is the maximum amount of bonds that hydrogen can
form?
15% - (answers)in room temperature of water what % is the maximum amount of
bonds going to be made?
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more acidic - (answers)when H+ concentration increases...
more basic - (answers)what H- concentration decreases...
hydrophilic - (answers)affinity for water
(polar and ionic bonds)
hydrophobic - (answers)repel water
(nonpolar covalent bonds)
buffers - (answers)chemical processes are sensitive to pH changes and resist
change in the pH solution
7.4 - (answers)the pH of human blood is...
carbonic acid and bicarbonate - (answers)what are the main buffers in blood?
right - (answers)response to a rise in pH in blood (becomes more basic)
left - (answers)response to a drop in pH in blood (becomes more acidic)
carbon atoms - (answers)building blocks for biological molecules
UCI BIO 93- MIDTERM 1 EXAM 2025| BRAND NEW
ACTUAL EXAM WITH 100% VERIFIED QUESTIONS
AND CORRECT SOLUTIONS| GUARANTEED VALUE
PACK| ACE YOUR GRADES.
atoms - (answers)smallest unit of chemical elements
molecules - (answers)two or more atoms combined
compound - (answers)two or more elements combined in a fixed ration
C, O, H, N - (answers)... are 4 elements that make up 96% of all living matter
covalent bond - (answers)what is the strongest bond?
covalent - (answers)sharing of electrons by two atoms
ionic - (answers)transfer of electrons between two atoms
hydrogen bond - (answers)what is a weak bond?
hydrogen bond - (answers)the H atom forms one covalent bond and a second
weaker bond with an atom in another molecules
,2|Page
nonpolar - (answers)equal sharing of electrons
(two of the same element)
polar - (answers)unequal sharing of electrons
has a charge
(water)
negative - (answers)what is the charge of O in water?
positive - (answers)what is the charge of H in water?
cohesion - (answers)interactions between water molecules
(H2O with H2O)
solvent - (answers)interactions between water and other molecules
4 bonds - (answers)what is the maximum amount of bonds that hydrogen can
form?
15% - (answers)in room temperature of water what % is the maximum amount of
bonds going to be made?
, 3|Page
more acidic - (answers)when H+ concentration increases...
more basic - (answers)what H- concentration decreases...
hydrophilic - (answers)affinity for water
(polar and ionic bonds)
hydrophobic - (answers)repel water
(nonpolar covalent bonds)
buffers - (answers)chemical processes are sensitive to pH changes and resist
change in the pH solution
7.4 - (answers)the pH of human blood is...
carbonic acid and bicarbonate - (answers)what are the main buffers in blood?
right - (answers)response to a rise in pH in blood (becomes more basic)
left - (answers)response to a drop in pH in blood (becomes more acidic)
carbon atoms - (answers)building blocks for biological molecules
