BIOL 2457 BIOCHEMISTRY QUESTIONS WITH
CORRECT ANSWERS 2025/2026
solution CORRECT ANSWER solutes are tiny & don't settle/scatter light; homogenous (ex:
water)
colloid CORRECT ANSWER solutes are larger than in a solution & scatter light; do not settle
out (ex: cytoplasm)
suspension CORRECT ANSWER solutes are very large and they settle out and may scatter
light; heterogenous (ex: blood)
ionic bond CORRECT ANSWER bonds 2 oppositely charged atoms together through the
transfer of electrons
anion CORRECT ANSWER atoms that gain electrons and are negatively charged
cation CORRECT ANSWER atoms that lost electrons and are positively charged
covalent bond CORRECT ANSWER strong bond that forms when 2 atoms share electrons
polar covalent CORRECT ANSWER unequal sharing of electrons between 2 atoms
nonpolar covalent CORRECT ANSWER equal sharing of electrons between 2 atoms
hydrogen bonds CORRECT ANSWER results from attraction of a hydrogen atom to another
oppositely charged atom
, van der waals forces CORRECT ANSWER attractions between nearby molecules due to
unequal charge distribution
dehydration synthesis CORRECT ANSWER -
a reaction in which the removal of a water molecule occurs
- joining 2 molecules by removing a water molecule
- water formation
-
the acid group of one 1 amino acid is bonded to the amine group of the next, w/ loss of a wat
er molecule
- synthesis rxs ivolve dehydration synthesis
hydrolysis CORRECT ANSWER -
peptide bonds linking amino acids together are broken when water is added to the bond
- addition of water
- water helps to break bonds
OIL RIG CORRECT ANSWER OIL: oxidation is loss of electrons
RIG: reduction is gain of electrons
inorganic compounds CORRECT ANSWER - do not contain carbon
- ex: water, salts, acids/bases
organic compounds CORRECT ANSWER - contains carbon and is covalently bonded
- ex: carbs, lipids, proteins, nucleic acids
water CORRECT ANSWER - high heat capacity
CORRECT ANSWERS 2025/2026
solution CORRECT ANSWER solutes are tiny & don't settle/scatter light; homogenous (ex:
water)
colloid CORRECT ANSWER solutes are larger than in a solution & scatter light; do not settle
out (ex: cytoplasm)
suspension CORRECT ANSWER solutes are very large and they settle out and may scatter
light; heterogenous (ex: blood)
ionic bond CORRECT ANSWER bonds 2 oppositely charged atoms together through the
transfer of electrons
anion CORRECT ANSWER atoms that gain electrons and are negatively charged
cation CORRECT ANSWER atoms that lost electrons and are positively charged
covalent bond CORRECT ANSWER strong bond that forms when 2 atoms share electrons
polar covalent CORRECT ANSWER unequal sharing of electrons between 2 atoms
nonpolar covalent CORRECT ANSWER equal sharing of electrons between 2 atoms
hydrogen bonds CORRECT ANSWER results from attraction of a hydrogen atom to another
oppositely charged atom
, van der waals forces CORRECT ANSWER attractions between nearby molecules due to
unequal charge distribution
dehydration synthesis CORRECT ANSWER -
a reaction in which the removal of a water molecule occurs
- joining 2 molecules by removing a water molecule
- water formation
-
the acid group of one 1 amino acid is bonded to the amine group of the next, w/ loss of a wat
er molecule
- synthesis rxs ivolve dehydration synthesis
hydrolysis CORRECT ANSWER -
peptide bonds linking amino acids together are broken when water is added to the bond
- addition of water
- water helps to break bonds
OIL RIG CORRECT ANSWER OIL: oxidation is loss of electrons
RIG: reduction is gain of electrons
inorganic compounds CORRECT ANSWER - do not contain carbon
- ex: water, salts, acids/bases
organic compounds CORRECT ANSWER - contains carbon and is covalently bonded
- ex: carbs, lipids, proteins, nucleic acids
water CORRECT ANSWER - high heat capacity
