BIOCHEM EXAM 3 WITH 100% CORRECT ANSWERS 2026

BIOCHEM EXAM 3 WITH 100%
CORRECT ANSWERS 2026



Which conformation of glucose is more stable and therefore
encountered more frequenly in biological contexts? correct
answer Chair


Which of the these amino acids can form N- or O-linkages in
glycoproteins? (select all that apply)
Asparagine
Serine
Cysteine
Lysine
Threonine correct answer Asparagine
Serine
Threonine


Which of the following terms correctly describes D-fructose?
Aldose
Ketose
Triose
Tetrose
Pentose

, Hexose correct answer Ketose
Hexose


Which of the following accurately describes the polysaccharide
cellulose? (Select all that apply)
-Formed from beta-1,4-glycosidic linked glucose chains with beta-
1,6-branches
-Formed from beta-1,4-glycosidic linked glucose chains only
-Is a form of glucose storage to provide energy
-Provides structural support
-Is digestible by humans
-Is NOT disgestible by humans correct answer -Formed from
beta-1,4-glycosidic linked glucose chains only
-Provides structural support
-Is NOT disgestible by humans


Which of one of these phospholipids contains a carbohydrate
within its head group?
Phosphatidylcholine
Phosphatidylserine
Phosphatidylinositol
Phosphatidylethanolamine correct answer Phosphatidylinositol


Which of the following protein modifications always involves the
covalent attachment of a lipid group to the Carboxy-terminus (C-
terminus) of a protein chain?
-Glycosylphosphatidylinositol (GPI) anchor