BioChem 210 Exam Module 4 Questions and Ansẉers update

BioChem 210 Exam Module 4
Questions and Ansẉers
2026\2027 update




1. Which of the following is the general molecular formula for a
simple carbohydrate?
A) (CH2O)n
B) (CH2)n
C) CnH2n+2
D) Cn(H2O)2n
Answer: A


2. A carbohydrate that cannot be hydrolyzed into simpler
carbohydrate units is called a:
A) Polysaccharide
B) Disaccharide
C) Monosaccharide
D) Oligosaccharide
Answer: C


3. Which of the following monosaccharides is a ketohexose?
A) Glucose

,B) Galactose
C) Fructose
D) Ribose
Answer: C


4. The stereoisomer of a sugar that is most commonly found in
nature is the:
A) D-isomer
B) L-isomer
C) Cis-isomer
D) Trans-isomer
Answer: A


5. When a monosaccharide cyclizes to form a ring structure, the
carbonyl carbon becomes a new chiral center. This carbon is called
the:
A) Anomeric carbon
B) Epimeric carbon
C) Glycosidic carbon
D) Phosphorylated carbon
Answer: A


6. Alpha and beta forms of a cyclic sugar are known as:
A) Enantiomers
B) Epimers
C) Anomers

, D) Diastereomers
Answer: C


7. The process by which the alpha and beta forms of a sugar
interconvert in aqueous solution is called:
A) Mutarotation
B) Tautomerization
C) Isomerization
D) Epimerization
Answer: A


8. Which of the following is a reducing sugar?
A) Sucrose
B) Trehalose
C) Maltose
D) Cellulose
Answer: C


9. Lactose is a disaccharide composed of:
A) Glucose + Glucose
B) Glucose + Galactose
C) Glucose + Fructose
D) Galactose + Fructose
Answer: B