BIOL 2457 BIOCHEMISTRY QUESTIONS WITH CORRECT ANSWERS

BIOL 2457 BIOCHEMISTRY QUESTIONS WITH
CORRECT ANSWERS 2026/2027
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 -- X2 X2 X2 X2 X2




a reaction in which the removal of a water molecule occurs
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




- joining 2 molecules by removing a water molecule
X2 X2 X2 X2 X2 X2 X2




- water formation X2




-
the acid group of one 1 amino acid is bonded to the amine group of the next, w/ loss of a wat er
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




molecule

- synthesis rxs ivolve dehydration synthesis X2 X2 X2 X2




hydrolysis - CORRECT ANSWER -- X2 X2 X2 X2




peptide bonds linking amino acids together are broken when water is added to the bond
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




- addition of water X2 X2




- water helps to break bonds
X2 X2 X2 X2




OIL RIG - CORRECT ANSWER -
X2 X2 X2 X2 X2




OIL: oxidation is loss of electrons RIG: reduction is gain of electrons
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




inorganic compounds - CORRECT ANSWER -- do not contain carbon
X2 X2 X2 X2 X2 X2 X2 X2 X2




- ex: water, salts, acids/bases
X2 X2 X2




organic compounds - CORRECT ANSWER -- contains carbon and is covalently bonded
X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




- ex: carbs, lipids, proteins, nucleic acids
X2 X2 X2 X2 X2




water - CORRECT ANSWER -- high heat capacity
X2 X2 X2 X2 X2 X2 X2