Glucose MCQs

Glucose (C₆H₁₂O₆) is a monosaccharide and a fundamental building block for many polysaccharides, such as cellulose and starch. It has six carbon atoms and features an aldehyde group, classifying it as an aldohexose. Glucose occurs both in free and combined forms and serves as a critical energy source for all organisms. Commercially, glucose is derived from starch through hydrolysis. Also referred to as dextrose or D(+) glucose, it exists in two cyclic isomeric forms, known as anomers: α-D(+)-Glucopyranose and β-D(+)-Glucopyranose.

How many molecules of phenyl hydrazine react with glucose to produce glucosazone?

(a) 3
(b) 4
(c) 2
(d) 1

In the process of glycolysis

(a) glucose is converted to haem
(b) glucose is oxidised to pyruvate
(c) pyruvate is converted to citrate
(d) glucose is oxidised to glutamate

Which of the following enzymes converts glucose to ethanol?

(a) Zymase
(b) Invertase
(c) Diesterase
(d) Both (a) and (b)

𝛼-D-glucose and 𝛽-D-glucose differ in the configuration of the OH group at which carbon?

(a) C₃
(b) C₂
(c) C₄
(d) C₁

𝝱-D(+)-Glucose has how many asymmetric carbons?

(a) 4
(b) 3
(c) 6
(d) 5

The two hemiacetal isomers of glucose, 𝛼-D-glucose and 𝛽-D-glucose are

(a) diastereomers
(b) epimers
(c) enantiomers
(d) anomers

𝜶-D(+)-Glucopyranose and 𝝱-D(+)-Glucopyranose differ in

(a) the size of the hemiacetal ring
(b) the number of OH groups present
(c) configuration
(d) conformation

The acetylation of glucose with acetic anhydride yields

(a) monoacetate
(b) triacetate
(c) hexaacetate
(d) pentaacetate

Hydrolysis of starch yields

(a) sucrose
(b) glucose
(c) fructose
(d) both (b) and (c)

Which of the following enzymes converts maltose to glucose?

(a) Diastase
(b) Zymase
(c) Lactase
(d) Maltase