Page 1 of 22
BIO 168 EXAM 1 AND STUDY GUIDE NEWEST 2025
TEST BANK| COMPLETE 500 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+ (BRAND NEW!!)
Atomic number .....ANSWER.....The number of protons in an atom,
which determines the identity of the atom.
Electronegativity .....ANSWER.....An atom's ability to attract
shared electrons to itself in a covalent bond.
Covalent bond .....ANSWER.....Chemical bond formed when
electrons are shared between atoms.
Hydrogen bond .....ANSWER.....Weak bond between an oxygen
or nitrogen atom, and a hydrogen atom that is bound
Ionic bond .....ANSWER.....Chemical bond formed when anions
and cations are held together by the attraction of their opposite
charges
,Page 2 of 22
Acids .....ANSWER.....Substances that release hydrogen ions (H+)
in solution and are proton donors
Electrolytes .....ANSWER.....Chemical substances , such as salts,
acids, and bases, that dissociate and ionize in water, which
makes the resulting solution capable of conducting an electrical
current.
Hydrophobic substances .....ANSWER.....Nonpolar molecules that
are insoluble in water (water fearing).
isotopes .....ANSWER.....Different atomic forms of an element with
the same number of protons, but different numbers of neutrons.
solutes .....ANSWER.....Substances that are dissolved in a solution.
Hydroxyl (alcohol) group .....ANSWER.....-OH
Carboxyl (carboxylic acid group) .....ANSWER.....-COOH
phospho (phosphate group) .....ANSWER.....-OPO3^2-
Amino (amine) group .....ANSWER.....-NH2
, Page 3 of 22
Carbon, hydrogen, oxygen, nitrogen
.....ANSWER.....Approximately 96% of the human body's mass is
compose of the elements
valence shell .....ANSWER.....The outermost electron shell of an
atom is known as its
anabolism .....ANSWER.....When atoms or molecules combine to
form larger, more complex molecules, the process is known as:
exergonic .....ANSWER.....Chemical reactions which release
energy are called _____ reactions.
hydrolysis .....ANSWER.....a molecule of water is added for each
bond broken in
acidic .....ANSWER.....a solution that has a pH of 3 is
Amino acid .....ANSWER.....Building block of proteins and
peptides; contains an amino group, carboxylic acid group, R
group,
BIO 168 EXAM 1 AND STUDY GUIDE NEWEST 2025
TEST BANK| COMPLETE 500 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+ (BRAND NEW!!)
Atomic number .....ANSWER.....The number of protons in an atom,
which determines the identity of the atom.
Electronegativity .....ANSWER.....An atom's ability to attract
shared electrons to itself in a covalent bond.
Covalent bond .....ANSWER.....Chemical bond formed when
electrons are shared between atoms.
Hydrogen bond .....ANSWER.....Weak bond between an oxygen
or nitrogen atom, and a hydrogen atom that is bound
Ionic bond .....ANSWER.....Chemical bond formed when anions
and cations are held together by the attraction of their opposite
charges
,Page 2 of 22
Acids .....ANSWER.....Substances that release hydrogen ions (H+)
in solution and are proton donors
Electrolytes .....ANSWER.....Chemical substances , such as salts,
acids, and bases, that dissociate and ionize in water, which
makes the resulting solution capable of conducting an electrical
current.
Hydrophobic substances .....ANSWER.....Nonpolar molecules that
are insoluble in water (water fearing).
isotopes .....ANSWER.....Different atomic forms of an element with
the same number of protons, but different numbers of neutrons.
solutes .....ANSWER.....Substances that are dissolved in a solution.
Hydroxyl (alcohol) group .....ANSWER.....-OH
Carboxyl (carboxylic acid group) .....ANSWER.....-COOH
phospho (phosphate group) .....ANSWER.....-OPO3^2-
Amino (amine) group .....ANSWER.....-NH2
, Page 3 of 22
Carbon, hydrogen, oxygen, nitrogen
.....ANSWER.....Approximately 96% of the human body's mass is
compose of the elements
valence shell .....ANSWER.....The outermost electron shell of an
atom is known as its
anabolism .....ANSWER.....When atoms or molecules combine to
form larger, more complex molecules, the process is known as:
exergonic .....ANSWER.....Chemical reactions which release
energy are called _____ reactions.
hydrolysis .....ANSWER.....a molecule of water is added for each
bond broken in
acidic .....ANSWER.....a solution that has a pH of 3 is
Amino acid .....ANSWER.....Building block of proteins and
peptides; contains an amino group, carboxylic acid group, R
group,
