©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
Biochemistry ACS Final Exam Questions
And Answers (Guaranteed A+)
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
1|Page
, ©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
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
Why type of amino acid is present in the plasma membrane among the fatty acid tails? -
answer✔hydrophobic/nonpolar
What is passive transport (simple diffusion)? - answer✔no energy required
no protein required
move from high concentration to low concentration
water, gases, ethanol (small nonpolar) can pass through
What is facilitated diffusion? - answer✔requires protein
2|Page
ALL RIGHTS RESERVED.
Biochemistry ACS Final Exam Questions
And Answers (Guaranteed A+)
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
1|Page
, ©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
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
Why type of amino acid is present in the plasma membrane among the fatty acid tails? -
answer✔hydrophobic/nonpolar
What is passive transport (simple diffusion)? - answer✔no energy required
no protein required
move from high concentration to low concentration
water, gases, ethanol (small nonpolar) can pass through
What is facilitated diffusion? - answer✔requires protein
2|Page
