Biomolecules Question 102

Question: Sucrose molecule is made up of

[KCET 2005]

Options:

A) A gluco pyranose and a fructo pyranose

B) A gluco pyranose and a fructo furanose

C) A gluco furanose and a fructo pyranose

D) A gluco furanose and a fructo furanose

Show Answer

Answer:

Correct Answer: B

Solution:

Surcrose is composed of $ \alpha $ -D-glucopyranose unit and a $ \beta $ -D-fructofuranose unit.

These units are joined by $ \alpha -\beta $ -glycosidic linkage between C-1 of the glucose unit and C-2 of the fructose unit.