Biochemistry ACS Final Exam | 100% Correct
Answers | Verified | Latest 2024 Version
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
proteins span the phospholipid bilayer
Answers | Verified | Latest 2024 Version
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
proteins span the phospholipid bilayer
