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.