BIOCHEMISTRY ACS FINAL EXAM QUESTIONS & ANSWERS | 100% VERIFIED SOLUTIONS |QUESTIONS WITH QUESTIONS 2026/2027
What is the D configuration of a sugar in a Fisher projection? ✔️chyrol carbon furthest from the carboxyl group
hydroxyl on right
What is the L configuration of a sugar in a Fisher projection? ✔️hydroxyl on left
What is the difference between glycogen and amylopectin? ✔️glycogen- has branches about every 10 residues (more highly branched)
amylopectin- has branches about every 25
What is amylose made up of? ✔️glucose
What makes up starch? ✔️amylose
amlyopectin
What is a glycosidic bond? ✔️links two monosaccharides together at points 1 and 4
What is the difference between an alpha(1-4) and beta(1-4) linkage? ✔️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? ✔️all have hydroxyl and carbonyl functional groups
Difference between aldose and ketose ✔️aldose has an aldohyde
ketose has a ketone
What makes up sucrose? ✔️fructose and glucose monosaccharides
What makes up lactose? ✔️glucose and galactose monosaccharides
What makes up mannose? ✔️two glucose monosaccharides
What are lipids? ✔️soluble in other nonpolar solvents (not water)
What are triglycerides composed of? ✔️glycerol and three fatty acids
What is saponification? ✔️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? ✔️oils
liquid at room temperature
What is the structure of the plasma membrane? ✔️hydrophylic head
hydrophobic fatty acid tails
What is the D configuration of a sugar in a Fisher projection? ✔️chyrol carbon furthest from the carboxyl group
hydroxyl on right
What is the L configuration of a sugar in a Fisher projection? ✔️hydroxyl on left
What is the difference between glycogen and amylopectin? ✔️glycogen- has branches about every 10 residues (more highly branched)
amylopectin- has branches about every 25
What is amylose made up of? ✔️glucose
What makes up starch? ✔️amylose
amlyopectin
What is a glycosidic bond? ✔️links two monosaccharides together at points 1 and 4
What is the difference between an alpha(1-4) and beta(1-4) linkage? ✔️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? ✔️all have hydroxyl and carbonyl functional groups
Difference between aldose and ketose ✔️aldose has an aldohyde
ketose has a ketone
What makes up sucrose? ✔️fructose and glucose monosaccharides
What makes up lactose? ✔️glucose and galactose monosaccharides
What makes up mannose? ✔️two glucose monosaccharides
What are lipids? ✔️soluble in other nonpolar solvents (not water)
What are triglycerides composed of? ✔️glycerol and three fatty acids
What is saponification? ✔️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? ✔️oils
liquid at room temperature
What is the structure of the plasma membrane? ✔️hydrophylic head
hydrophobic fatty acid tails
