CHEM 212 Biochem - exam 4 Portage learning FALL 2025

biochem module 4

1. which of the following
dihydroxyacetone, it is a ketose
monosaccharides is not an aldose?

-erythrose
-dihydroxyacetone
-glucose
-glyceraldehyde
-ribose

2. when two monosaccharides are
epimers: they ditter only in the configuration
about one carbon atom
-they differ only in the configuration
about the penultimate carbon
-one is an aldose, the other a ketose
-they differ only in the configuration
about one carbon atom
-they form o-glycosidic bonds
-they are oligosaccharides

3. which pair is anomeric? alpha-D-glucose and beta-D-glucose

-D-glucose and D-fructose
-D-glucose and L-fructose
-D-glucose and L-glucose
-alpha-D-glucose and beta-D-fructose
-alpha-D-glucose and beta-D-glucose

4. lactose is made from linking galactose
lactose forms by a condensation
and glucose. when this happens:
reaction, water is released
-a polysaccharide is formed
-gas is eliminated
-an epimer is formed


, biochem module 4

-an anomeric carbon is formed on
carbon-1
-lactose forms by a condensation
reaction, water is released
αlpha-D-glucose
5. Amylose and amylopectin are both
poly- mers of:

-alpha-D-glucose
-βeta-D-glucose
-Galactose
-Idose
-Maltose

6. chitin and cellulose are both polymers beta-D-glucose
of:

-alpha-D-glucose
-galactose
-beta-D-glucose
-idose
-maltose

7. Which carbohydrates are alpha-D-glucose? - starch
-glycogen
-amylose
-amylopectin

8. Which carbohydrates are beta-D-glucose? - cellulose
-chitin

9. Which statements about starch and amylopectin and
glyco- gen is false?

-amylose is unbranched;