BIOCHEMISTRY ACS FINAL EXAM|VERIFIED QUESTIONS AND CORRECT DETAILED
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027
What is the D configuration of a sugar in a Fisher projection? - ANSWER✔ chyrol carbon furthest from
the carboxyl group
hydroxyl on right
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
What is saponification? - ANSWER✔ base hydrolysis of a triglyceride or other fat
strong base is added
breaks ester linkages to release hydroxyls and form glycerol
What has a higher level of unsaturation -- oils or fats? - ANSWER✔ oils
liquid at room temperature
What is the structure of the plasma membrane? - ANSWER✔ hydrophylic head
hydrophobic fatty acid tails
proteins span the phospholipid bilayer
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027
What is the D configuration of a sugar in a Fisher projection? - ANSWER✔ chyrol carbon furthest from
the carboxyl group
hydroxyl on right
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
What is saponification? - ANSWER✔ base hydrolysis of a triglyceride or other fat
strong base is added
breaks ester linkages to release hydroxyls and form glycerol
What has a higher level of unsaturation -- oils or fats? - ANSWER✔ oils
liquid at room temperature
What is the structure of the plasma membrane? - ANSWER✔ hydrophylic head
hydrophobic fatty acid tails
proteins span the phospholipid bilayer
