BIOCHEMISTRY ACS COMPREHENSIVE EXAMINATION 2026 FULL QUESTIONS AND CORRECT SOLUTIONS GRADED A+

BIOCHEMISTRY ACS COMPREHENSIVE
EXAMINATION 2026 FULL QUESTIONS AND
CORRECT SOLUTIONS GRADED A+

◉What is the L configuration of a sugar in a Fisher
projection?.ANSWER:-hydroxyl on left


◉What is the difference between glycogen and
amylopectin?.ANSWER:-glycogen- has branches about every 10
residues (more highly branched)


amylopectin- has branches about every 25


◉What is amylose made up of?.ANSWER:-glucose


◉What makes up starch?.ANSWER:-amylose
amlyopectin


◉What is a glycosidic bond?.ANSWER:-links two monosaccharides
together at points 1 and 4


◉What is the difference between an alpha(1-4) and beta(1-4)
linkage?.ANSWER:-alpha: when the oxygen is pointed down in a
glycosidic bond

, beta: when the oxygen is pointed up in a glycosidic bond


◉What is the definition of a carbohydrate?.ANSWER:-all have
hydroxyl and carbonyl functional groups


◉Difference between aldose and ketose.ANSWER:-aldose has an
aldohyde


ketose has a ketone


◉What makes up sucrose?.ANSWER:-fructose and glucose
monosaccharides


◉What makes up lactose?.ANSWER:-glucose and galactose
monosaccharides


◉What makes up mannose?.ANSWER:-two glucose
monosaccharides


◉What are lipids?.ANSWER:-soluble in other nonpolar solvents (not
water)


◉What are triglycerides composed of?.ANSWER:-glycerol and three
fatty acids