Chemistry Question on Biomolecules

Question

Which of the following is a trisaccharide ?

Answer 1

Solution

On hydrolysis stachyrose gives four, sucrose gives two, raffinose gives three and ribose gives no molecule. of monosaccharides. Thus, only raffinose is a trisaccharide.

$\underset {\text{raffinose}}{C_{18} H_{32} O_{16}} + H_2 O \longrightarrow \, 3C_6 H_{12} O_6$