CHEM 1120 Chemistry Exam 2 ECU – Topics, Notes & Practice Guide
Animals store energy in the form of - correct answer ✔✔glycogen
A racemic mixture is - correct answer ✔✔A mixture that contains equal amounts of the (+) and
(-) enantiomers. Racemic mixtures are not optically active.
Cellulose and starch are similar in that they are both polymers of glucose. Cellulose, however,
forms sheet-like structures, which give rigidity to a plant, whereas starch forms spirals. What
accounts for this difference in macroscopic structure? - correct answer ✔✔Cellulose has a ß-
(1→4) linkage, whereas starch has an α-(1→4) linkage.
From which vitamin is NAD+/NADH produced in the body? - correct answer ✔✔niacin
How are disaccharides separated into two monosaccharides? - correct answer ✔✔Hydrolysis
Insulin acts to __________, whereas glucagon __________. - correct answer ✔✔decrease blood
sugar; increases blood sugar
The Fischer projection for fructose is shown below. Which functional group(s) does fructose
contain? - correct answer ✔✔hydroxyl groups and a ketone
The following reaction is an example of a(n) - correct answer ✔✔oxidation.
The following reaction is one step in the key metabolic pathway called the citric acid cycle. This
reaction is missing a reactant (A) which reacts to form a product (B). What is the identity of A
and B? - correct answer ✔✔A is NAD+, and B is NADH + H+.
Animals store energy in the form of - correct answer ✔✔glycogen
A racemic mixture is - correct answer ✔✔A mixture that contains equal amounts of the (+) and
(-) enantiomers. Racemic mixtures are not optically active.
Cellulose and starch are similar in that they are both polymers of glucose. Cellulose, however,
forms sheet-like structures, which give rigidity to a plant, whereas starch forms spirals. What
accounts for this difference in macroscopic structure? - correct answer ✔✔Cellulose has a ß-
(1→4) linkage, whereas starch has an α-(1→4) linkage.
From which vitamin is NAD+/NADH produced in the body? - correct answer ✔✔niacin
How are disaccharides separated into two monosaccharides? - correct answer ✔✔Hydrolysis
Insulin acts to __________, whereas glucagon __________. - correct answer ✔✔decrease blood
sugar; increases blood sugar
The Fischer projection for fructose is shown below. Which functional group(s) does fructose
contain? - correct answer ✔✔hydroxyl groups and a ketone
The following reaction is an example of a(n) - correct answer ✔✔oxidation.
The following reaction is one step in the key metabolic pathway called the citric acid cycle. This
reaction is missing a reactant (A) which reacts to form a product (B). What is the identity of A
and B? - correct answer ✔✔A is NAD+, and B is NADH + H+.
